MORGAN STANLEY DEAN WITTER INTERNATIONAL FUND
497, 1999-06-16
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<PAGE>
                                                        PROSPECTUS - MAY 5, 1999

Morgan Stanley Dean Witter
                                                              INTERNATIONAL FUND

                                 [COVER PHOTO]

                               A MUTUAL FUND THAT SEEKS LONG-TERM CAPITAL GROWTH

  The Securities and Exchange Commission has not approved or disapproved these
                           securities or passed upon
    the adequacy of this Prospectus. Any representation to the contrary is a
                               criminal offense.
<PAGE>
CONTENTS

<TABLE>
<S>                       <C>                                                     <C>
The Fund                  Investment Objective..................................                   1
                          Principal Investment Strategies.......................                   1
                          Principal Risks.......................................                   2
                          Fees and Expenses.....................................                   4
                          Additional Investment Strategy Information............                   5
                          Additional Risk Information...........................                   6
                          Fund Management.......................................                   8

Shareholder Information   Pricing Fund Shares...................................                   9
                          Underwriting..........................................                   9
                          How to Buy Shares.....................................                  10
                          How to Exchange Shares................................                  12
                          How to Sell Shares....................................                  13
                          Distributions.........................................                  15
                          Tax Consequences......................................                  16
                          Share Class Arrangements..............................                  17

Our Family of Funds       ......................................................   Inside Back Cover

                          THIS PROSPECTUS CONTAINS IMPORTANT INFORMATION ABOUT THE FUND.
                          PLEASE READ IT CAREFULLY AND KEEP IT FOR FUTURE REFERENCE.
</TABLE>

           FUND CATEGORY
           ---------------------------
       /X/ GROWTH

       / / Growth and Income

       / / Income

       / / Money Market
<PAGE>
(SIDEBAR)
CAPITAL GROWTH
AN INVESTMENT OBJECTIVE HAVING THE GOAL OF SELECTING SECURITIES WITH THE
POTENTIAL TO RISE IN VALUE RATHER THAN PAY OUT INCOME.
MSCI EAFE COUNTRIES
INCLUDE AUSTRALIA, JAPAN, NEW ZEALAND, MOST NATIONS IN WESTERN EUROPE, HONG KONG
AND SINGAPORE.
(END SIDEBAR)

THE FUND

[ICON]  INVESTMENT OBJECTIVE
- --------------------------------------------------------------------------------
           Morgan Stanley Dean Witter International Fund is a mutual fund that
           seeks long-term capital growth.

[ICON]  PRINCIPAL INVESTMENT STRATEGIES
- --------------------------------------------------------------------------------
           The Fund will normally invest at least 65% of its total assets in a
           diversified portfolio of international common stocks and other equity
           securities. The Fund's "Investment Manager," Morgan Stanley Dean
           Witter Advisors Inc., and its "Sub-Advisor" -- Morgan Stanley Dean
           Witter Investment Management Inc. -- use a "top-down" approach that
           emphasizes country and sector selection and weightings over
           individual stock selection.

                           COUNTRY SELECTION. The Sub-Advisor first considers
           the countries represented in the Morgan Stanley Capital International
           EAFE (Europe, Australia and Far East) Index. The Sub-Advisor -- on an
           ongoing basis -- establishes the proportion or weighting for each
           country (eg., overweight, underweight or neutral) relative to the
           Index for investment by the Fund. The Sub-Advisor may also choose to
           overweight or underweight particular sectors, such as
           telecommunications or banking, within each country or region. In
           making its determinations, it evaluates factors such as valuation,
           economic outlook, corporate earnings growth, inflation, liquidity and
           risk characteristics, investor sentiment, interest rates, and
           currency outlook. The Fund will invest in at least three separate
           countries.

           STOCK SELECTION. The Sub-Advisor invests the Fund's assets within
           each country and/or sector based on its assigned weighting. Within
           each country, the Sub-Advisor will try to match the performance of a
           broad local market index by investing in optimized "baskets" of
           common stocks and other equity securities, which may include
           depository receipts, preferred securities and convertible securities.
           In most cases, the MSCI Index for that country will be used as the
           benchmark index.

           In addition to the securities discussed above, the Fund may also
           invest in equity and/or fixed-income and convertible securities of
           issuers located anywhere in the world, including the United States;
           securities of other investment companies; forward currency contracts
           and futures on stock indexes. The Fund may invest up to 10% of its
           assets in securities of companies located in emerging market
           countries.

           Common stock is a share ownership or equity interest in a
           corporation. It may or may not pay dividends, as some companies
           reinvest all of their profits back into their businesses, while
           others pay out some of their profits to shareholders as dividends. A

                                                                               1
<PAGE>
           depository receipt is generally issued by a bank or financial
           institution and represents an ownership interest in the common stock
           or other equity securities of a foreign company.

           In pursuing the Fund's investment objective, the Investment Manager
           and/or Sub-Advisor have considerable leeway in deciding which
           investments they buy, hold or sell on a day-to-day basis -- and which
           trading strategies they use. For example, the Investment Manager
           and/or Sub-Advisor in their discretion may determine to use some
           permitted trading strategies while not using others. For more
           information about these investment strategies, see Additional
           Investment Strategy Information.

[ICON]  PRINCIPAL RISKS
- --------------------------------------------------------------------------------
           There is no assurance that the Fund will achieve its investment
           objective. The Fund's share price will fluctuate with changes in the
           market value of the Fund's portfolio securities. When you sell Fund
           shares, they may be worth less than what you paid for them and,
           accordingly, you can lose money investing in this Fund.

           A principal risk of investing in the Fund is associated with its
           foreign stock investments. In general, stock values fluctuate in
           response to activities specific to the company as well as general
           market, economic and political conditions. Stock prices can fluctuate
           widely in response to these factors.

           FOREIGN SECURITIES. The Fund's investments in foreign securities
           (including depository receipts) involve risks that are in addition to
           the risks associated with domestic securities. One additional risk is
           currency risk. While the price of Fund shares is quoted in U.S.
           dollars, the Fund generally converts U.S. dollars to a foreign
           market's local currency to purchase a security in that market. If the
           value of that local currency falls relative to the U.S. dollar, the
           U.S. dollar value of the foreign security will decrease. This is true
           even if the foreign security's local price remains unchanged.

           Foreign securities also have risks related to economic and political
           developments abroad, including expropriations, confiscatory taxation,
           exchange control regulation, limitation on the use or transfer of
           Fund assets and any effects of foreign social, economic or political
           instability. In particular, adverse political or economic
           developments in a particular region and/or country in which the Fund
           invests could cause a substantial decline in value of the portfolio.
           Foreign companies, in general, are not subject to the regulatory
           requirements of U.S. companies and, as such, there may be less
           publicly available information about these companies. Moreover,
           foreign accounting, auditing and financial reporting standards
           generally are different from those applicable to U.S. companies.
           Finally, in the event of a default of any foreign debt obligations,
           it may be more difficult for the Fund to obtain or enforce a judgment
           against the issuers of the securities.

 2
<PAGE>
           Securities of foreign issuers may be less liquid than comparable
           securities of U.S. issuers and, as such, their price changes may be
           more volatile. Furthermore, foreign exchanges and broker-dealers are
           generally subject to less government and exchange scrutiny and
           regulation than their U.S. counterparts. In addition, differences in
           clearance and settlement procedures in foreign markets may occasion
           delays in settlements of the Fund's trades effected in those markets.
           Delays in purchasing securities may result in the Fund losing
           investment opportunities. The inability to dispose of foreign
           securities due to settlement delays could result in losses to the
           Fund due to subsequent declines in value of the securities.

           The foreign securities in which the Fund invests may be issued by
           companies located in emerging market countries. Compared to the
           United States and other developed countries, emerging market
           countries may have relatively unstable governments, economies based
           on only a few industries and securities markets that trade a small
           number of securities. Prices of these securities tend to be
           especially volatile and, in the past, securities in these countries
           have been characterized by greater potential loss than securities of
           companies located in developed countries.

           Many European countries have adopted or are in the process of
           adopting a single European currency, referred to as the "euro." The
           consequences of the euro conversion for foreign exchange rates,
           interest rates and the value of European securities the Fund may
           purchase are presently unclear. The consequences may adversely affect
           the value and/or increase the volatility of securities held by the
           Fund.

           OTHER RISKS. The performance of the Fund also will depend on whether
           the Investment Manager and/or Sub-Advisor are successful in pursuing
           the Fund's investment strategy. The Fund is also subject to other
           risks from its permissible investments, including the risks
           associated with its investments in the securities of other investment
           companies, forward currency contracts and futures on stock indexes.
           For more information about these risks, see the "Additional Risk
           Information" section.

           Shares of the Fund are not bank deposits and are not guaranteed or
           insured by the FDIC or any other government agency.

                                                                               3
<PAGE>
(SIDEBAR)
SHAREHOLDER FEES
THESE FEES ARE PAID DIRECTLY FROM YOUR INVESTMENT.
ANNUAL FUND
OPERATING EXPENSES
THESE EXPENSES ARE DEDUCTED FROM THE FUND'S ASSETS.
(END SIDEBAR)

[ICON]  FEES AND EXPENSES
- --------------------------------------------------------------------------------
           The Fund offers four Classes of shares: Classes A, B, C and D. Each
           Class has a different combination of fees, expenses and other
           features. The table below briefly describes the fees and expenses
           that you may pay if you buy and hold shares of the Fund. The Fund
           does not charge account or exchange fees. See the "Share Class
           Arrangements" section for further fee and expense information.

<TABLE>
<CAPTION>
                                                              CLASS A   CLASS B   CLASS C    CLASS D
<S>                                                           <C>       <C>       <C>        <C>
- ----------------------------------------------------------------------------------------------------
 SHAREHOLDER FEES
- ----------------------------------------------------------------------------------------------------
 Maximum sales charge (load) imposed on purchases (as a
 percentage of offering price)                                5.25%(1)   None       None      None
- ----------------------------------------------------------------------------------------------------
 Maximum deferred sales charge (load) (as a percentage based
 on the lesser of the offering price or net asset value at
 redemption)                                                  None(2)   5.00%(3)  1.00%(4)    None
- ----------------------------------------------------------------------------------------------------
 ANNUAL FUND OPERATING EXPENSES
- ----------------------------------------------------------------------------------------------------
 Management fee(5)                                             1.00%     1.00%     1.00%      1.00%
- ----------------------------------------------------------------------------------------------------
 Distribution and service (12b-1) fees                         0.25%     1.00%     1.00%      None
- ----------------------------------------------------------------------------------------------------
 Other expenses(5,6)                                           0.51%     0.51%     0.51%      0.51%
- ----------------------------------------------------------------------------------------------------
 Total annual Fund operating expenses                          1.76%     2.51%     2.51%      1.51%
- ----------------------------------------------------------------------------------------------------
</TABLE>

1    Reduced for purchases of $25,000 and over.
2    Investments that are not subject to any sales charge at the time of
     purchase are subject to a contingent deferred sales charge ("CDSC") of
     1.00% that will be imposed on sales made within one year after purchase,
     except for certain specific circumstances.
3    The CDSC is scaled down to 1.00% during the sixth year, reaching zero
     thereafter. See "Share Class Arrangements" for a complete discussion of the
     CDSC.
4    Only applicable to sales made within one year after purchase.
5    The Investment Manager has agreed to assume all operating expenses (except
     for brokerage and 12b-1 fees) and waive the compensation provided in its
     investment management agreement until such time as the Fund has $50 million
     of net assets or until six months from the date of commencement of the
     Fund's operations, whichever occurs first. Other expenses are estimated.
     The expenses and fees disclosed above do not reflect the assumption of any
     expenses or the waiver of any compensation by the Investment Manager.
6    "Other Expenses" are estimated based on expenses anticipated for the first
     complete fiscal year of the Fund.

 4
<PAGE>
           EXAMPLE
           This example is intended to help you compare the cost of investing in
           the Fund with the cost of investing in other mutual funds.

           The example assumes that you invest $10,000 in the Fund, your
           investment has a 5% return each year, and the Fund's operating
           expenses remain the same. Although your actual costs may be higher or
           lower, the tables below show your costs at the end of each period
           based on these assumptions depending upon whether or not you sell
           your shares at the end of each period.

<TABLE>
<CAPTION>
                  IF YOU SOLD YOUR     IF YOU HELD YOUR
                      SHARES:              SHARES:
                 ------------------   ------------------
                 1 YEAR    3 YEARS    1 YEAR    3 YEARS
<S>              <C>       <C>        <C>       <C>
- -----------------------------------   ------------------
 CLASS A           $694     $1,050      $694     $1,050
- -----------------------------------   ------------------
 CLASS B           $754     $1,082      $254     $  782
- -----------------------------------   ------------------
 CLASS C           $354     $  782      $254     $  782
- -----------------------------------   ------------------
 CLASS D           $154     $  477      $154     $  477
- -----------------------------------   ------------------
</TABLE>

[ICON]  ADDITIONAL INVESTMENT STRATEGY INFORMATION
- --------------------------------------------------------------------------------
           The Fund seeks long-term capital growth.

           This section provides additional information concerning the Fund's
           principal strategies.

           OTHER GLOBAL SECURITIES. The Fund may invest up to 35% of its assets
           in equity and/or fixed-income and convertible securities of issuers
           located anywhere in the world, including the United States.

           INVESTMENT COMPANIES. The Fund may invest up to 10% of its assets in
           securities issued by other investment companies. The Investment
           Manager and/or Sub-Advisor may view these investments as necessary to
           participate in certain foreign markets where direct investment by the
           Fund may be difficult or impracticable.

           EMERGING MARKET COUNTRIES. The Fund may invest up to 10% of its
           assets in securities of companies located in emerging market
           countries. These are countries that major financial institutions,
           such as the World Bank, generally consider to be less economically
           mature than developed nations. Emerging market countries can include
           every nation in the world except the United States, Canada, Japan,
           Hong Kong, Singapore, Australia, New Zealand and most nations located
           in Western Europe.

           FORWARD CURRENCY CONTRACTS. The Fund's investments also may include
           forward currency contracts, which involve the purchase or sale of a
           specific amount of foreign currency at the current price with
           delivery at a specified future date. The Fund may use

                                                                               5
<PAGE>
           these contracts to hedge against adverse price movements in its
           portfolio securities and the currencies in which they are denominated
           or to gain exposure to currencies underlying various securities or
           financial instruments held in its portfolio.

           FUTURES ON STOCK INDEXES. The Fund may invest in futures on stock
           indexes. Futures on stock indexes may be used to facilitate
           allocation of the Fund's investments among asset classes, to increase
           or decrease the Fund's exposure to the stock or bond markets, to
           generate income, or to seek to protect against decline in securities
           prices or increases in prices of securities that may be purchased.

           DEFENSIVE INVESTING. The Fund may take temporary "defensive"
           positions in attempting to respond to adverse market conditions. The
           Fund may invest any amount of its assets in cash or money market
           instruments in a defensive posture when the Investment Manager and/or
           Sub-Advisor believe it is advisable to do so. Although taking a
           defensive posture is designed to protect the Fund from an anticipated
           market downturn, it could have the effect of reducing the benefit
           from any upswing in the market.

           PORTFOLIO TURNOVER. The Fund may engage in active and frequent
           trading of portfolio securities to achieve its principal investment
           strategies. A high turnover rate will increase Fund brokerage costs.
           It also may increase the Fund's capital gains, which are passed along
           to Fund shareholders as distributions. This, in turn, may increase
           your tax liability as a Fund shareholder. See the sections on
           "Distributions" and "Tax Consequences."

           The percentage limitations relating to the composition of the Fund's
           portfolio apply at the time the Fund acquires an investment and refer
           to the Fund's net assets, unless otherwise noted. Subsequent
           percentage changes that result from market fluctuations or changes in
           assets will not require the Fund to sell any portfolio security. The
           Fund may change its principal investment strategies without
           shareholder approval; however, you would be notified of any changes.

[ICON]  ADDITIONAL RISK INFORMATION
- --------------------------------------------------------------------------------
           As discussed in the "Principal Risks" section, a principal risk of
           investing in the Fund is associated with its foreign stock
           investments. This section provides additional information regarding
           the principal risks of investing in the Fund.

           FIXED-INCOME SECURITIES. All fixed-income securities, such as
           corporate debt, are subject to two types of risk: credit risk and
           interest rate risk. Credit risk refers to the possibility that the
           issuer of a security will be unable to make interest payments and/or
           repay the principal on its debt.

           Interest rate risk refers to fluctuations in the value of a
           fixed-income security resulting from changes in the general level of
           interest rates. When the general level of interest rates goes up, the
           prices of most fixed-income securities go down. When the general

 6
<PAGE>
           level of interest rates goes down, the prices of most fixed-income
           securities go up. (Zero coupon securities are typically subject to
           greater price fluctuations than comparable securities that pay
           interest.)

           A portion of the fixed-income convertible securities in which the
           Fund may invest may be rated below investment grade. Securities rated
           below investment grade are commonly known as "junk bonds" and have
           speculative credit risk characteristics.

           FORWARD CURRENCY CONTRACTS. The Fund's participation in forward
           currency contracts also involves risks. If the Investment Manager
           and/or Sub-Advisor employs a strategy that does not correlate well
           with the Fund's investments or the currencies in which the
           investments are denominated, currency contracts could result in a
           loss. The contracts also may increase the Fund's volatility and may
           involve a significant risk.

           FUTURES ON STOCK INDEXES. If the Fund invests in futures on stock
           indexes, its participation in these markets would subject the Fund to
           investment risks to which the Fund would not be subject absent the
           use of these strategies. If the Investment Manager's and/or
           Sub-Advisor's predictions of movements in the direction of the stock
           index are inaccurate, the adverse consequences to the Fund (e.g., a
           reduction in the Fund's net asset value or a reduction in the amount
           of income available for distribution) may leave the Fund in a worse
           position than if these strategies were not used. Other risks inherent
           in the use of futures on stock indexes include, for example, the
           possible imperfect correlation between the price of futures contracts
           and movements in the prices of the securities being hedged, and the
           possible absence of a liquid secondary market for any particular
           instrument.

           YEAR 2000. The Fund could be adversely affected if the computer
           systems necessary for the efficient operation of the Investment
           Manager, the Sub-Advisor, the Fund's other service providers and the
           markets and corporate and governmental issuers in which the Fund
           invests do not properly process and calculate date-related
           information from and after January 1, 2000. While year 2000-related
           computer problems could have a negative effect on the Fund, the
           Investment Manager, the Sub-Advisor and their affiliates are working
           hard to avoid any problems and to obtain assurances from their
           service providers that they are taking similar steps.

           In addition, it is possible that the markets for securities in which
           the Fund invests may be detrimentally affected by computer failures
           throughout the financial services industry beginning January 1, 2000.
           Improperly functioning trading systems may result in settlement
           problems and liquidity issues. In addition, corporate and
           governmental data processing errors may result in production problems
           for individual companies and overall economic uncertainties. Earnings
           of individual issuers will be affected by remediation costs, which
           may be substantial and may be reported inconsistently in U.S. and
           foreign financial statements. Accordingly, the Fund's investments may
           be adversely affected.

                                                                               7
<PAGE>
(SIDEBAR)
MORGAN STANLEY DEAN WITTER ADVISORS INC.
THE INVESTMENT MANAGER IS WIDELY RECOGNIZED AS A LEADER IN THE MUTUAL FUND
INDUSTRY AND TOGETHER WITH MORGAN STANLEY DEAN WITTER SERVICES COMPANY INC., ITS
WHOLLY-OWNED SUBSIDIARY, HAS MORE THAN $129 BILLION
IN ASSETS UNDER MANAGEMENT OR ADMINISTRATION AS OF MARCH 31, 1999.
(END SIDEBAR)

[ICON]  FUND MANAGEMENT
- --------------------------------------------------------------------------------
           The Fund has retained the Investment Manager -- Morgan Stanley Dean
           Witter Advisors Inc. -- to provide administrative services, manage
           its business affairs and supervise the investment of its assets. The
           Investment Manager has, in turn, contracted with the Sub-Advisor --
           Morgan Stanley Dean Witter Investment Management Inc. - to invest the
           Fund's assets, including the placing of orders for the purchase and
           sale of portfolio securities. The Investment Manager is a
           wholly-owned subsidiary of Morgan Stanley Dean Witter & Co., a
           preeminent global financial services firm that maintains leading
           market positions in each of its three primary businesses: securities,
           asset management and credit services. Its main business office is
           located at Two World Trade Center, New York, New York 10048.

           The Sub-Advisor, together with its institutional investment
           management affiliates, manages more than $150 billion primarily for
           employee benefit plans, investment companies, endowments, foundations
           and wealthy individuals. The Sub-Advisor also is a subsidiary of
           Morgan Stanley Dean Witter & Co. Its main business office is located
           at 1221 Avenue of the Americas, New York, New York 10020.

           Ann D. Thivierge and Barton Biggs are the primary portfolio managers
           of the Fund. Ann Thivierge is a Managing Director of the Sub-Advisor.
           She is a member of the Sub-Advisor's Asset Allocation Committee,
           primarily representing the Total Funds Management Team since its
           inception in 1991. Barton M. Biggs has been the Chairman and a
           Director of the Sub-Advisor since 1980 and a Managing Director of
           Morgan Stanley & Co. Incorporated since 1975. He is also a director
           and chairman of various registered investment companies to which the
           Sub-Advisor and certain of its affiliates provide investment advisory
           services.

           The Fund pays the Investment Manager a monthly management fee as full
           compensation for the services and facilities furnished to the Fund,
           and for Fund expenses assumed by the Investment Manager calculated
           daily by applying the annual rate of 1.0% to the Fund's daily net
           assets. The Investment Manager pays the Sub-Advisor monthly
           compensation equal to 40% of this fee. The Investment Manager has
           agreed to assume all operating expenses (except for brokerage and
           distribution (12b-1) fees) and waive its management fee for six
           months or until the Fund has $50 million in assets, whichever occurs
           first.

 8
<PAGE>
SHAREHOLDER INFORMATION

[ICON]  PRICING FUND SHARES
- --------------------------------------------------------------------------------
           The price of Fund shares (excluding sales charges), called "net asset
           value," is based on the value of the Fund's portfolio securities.
           While the assets of each Class are invested in a single portfolio of
           securities, the net asset value of each Class will differ because the
           Classes have different ongoing distribution fees.

           The net asset value per share of the Fund is determined once daily at
           4:00 p.m. Eastern time on each day that the New York Stock Exchange
           is open (or, on days when the New York Stock Exchange closes prior to
           4:00 p.m., at such earlier time). Shares will not be priced on days
           that the New York Stock Exchange is closed.

           The value of the Fund's portfolio securities is based on the
           securities' market price when available. When a market price is not
           readily available, including circumstances under which the Investment
           Manager and/or Sub-Advisor determines that a security's market price
           is not accurate, a portfolio security is valued at its fair value, as
           determined under procedures established by the Fund's Board of
           Trustees. In these cases, the Fund's net asset value will reflect
           certain portfolio securities' fair value rather than their market
           price. Due to the Fund's holdings of securities that are primarily
           listed on foreign exchanges, the values of the Fund's portfolio
           securities may change on days when you will not be able to purchase
           or sell your shares.

           An exception to the Fund's general policy of using market prices
           concerns its short-term debt portfolio securities. Debt securities
           with remaining maturities of sixty days or less at the time of
           purchase are valued at amortized cost. However, if the cost does not
           reflect the securities' market value, these securities will be valued
           at their fair value.

[ICON]  UNDERWRITING
- --------------------------------------------------------------------------------
           The Fund will initially offer its shares from approximately May 24,
           1999 through June 23, 1999 in an underwriting by the Fund's
           Distributor, Morgan Stanley Dean Witter Distributors Inc., as the
           Fund's principal underwriter. During this period, you may place
           orders to buy shares through the Distributor, however, shares will
           not be issued until the Closing Date, which will take place on June
           28, 1999 or on such later date as agreed upon by the Fund and the
           Distributor. You are not obligated to pay for the shares prior to the
           Closing Date. If any orders are accompanied by payment, the payment
           will be returned to you, unless you request that such payment be
           invested in a Morgan Stanley Dean Witter Money Market Fund. In such
           case the funds will be automatically transferred from the Money
           Market Fund to the Fund on the Closing Date. You may cancel your
           order to purchase shares without penalty at any time prior to the
           Closing Date. A continuous offering of the Fund's shares will begin
           approximately two weeks after the Closing Date.

                                                                               9
<PAGE>
(SIDEBAR)
CONTACTING A FINANCIAL ADVISOR
IF YOU ARE NEW TO THE MORGAN STANLEY DEAN WITTER FAMILY OF FUNDS AND WOULD LIKE
TO CONTACT A FINANCIAL ADVISOR, CALL
(800) THE-DEAN FOR THE TELEPHONE NUMBER OF THE MORGAN STANLEY DEAN WITTER OFFICE
NEAREST YOU. YOU MAY ALSO ACCESS OUR OFFICE LOCATOR ON OUR INTERNET SITE AT:
WWW.DEANWITTER.COM/FUNDS
(END SIDEBAR)

           The Distributor will purchase Class B, Class C and Class D shares
           from the Fund at $10.00 per share with all proceeds going to the Fund
           and will purchase Class A shares at $10.00 per share plus a sales
           charge with the sales charge paid to the Distributor and the net
           asset value of $10.00 per share going to the Fund. The Distributor
           may also receive contingent deferred sales charges from future
           redemptions of Class A, Class B and Class C shares (see "Purchase of
           Fund Shares -- Continuous Offering").

           The minimum number of Fund shares which may be purchased by any
           shareholder during the initial offering period is 100 shares.
           Certificates for shares purchased will not be issued unless requested
           by the shareholder in writing.

[ICON]  HOW TO BUY SHARES
- --------------------------------------------------------------------------------
           You may open a new account to buy Fund shares or buy additional Fund
           shares for an existing account by contacting your Morgan Stanley Dean
           Witter Financial Advisor or other authorized financial
           representative. Your Financial Advisor will assist you, step-by-step,
           with the procedures to invest in the Fund. You may also purchase
           shares directly by calling the Fund's transfer agent and requesting
           an application.

           Because every investor has different immediate financial needs and
           long-term investment goals, the Fund offers investors four Classes of
           shares: Classes A, B, C and D. Class D shares are only offered to a
           limited group of investors. Each Class of shares offers a distinct
           structure of sales charges, distribution and service fees, and other
           features that are designed to address a variety of needs. Your
           Financial Advisor or other authorized financial representative can
           help you decide which Class may be most appropriate for you. When
           purchasing Fund shares, you must specify which Class of shares you
           wish to purchase.

           When you buy Fund shares, the shares are purchased at the next share
           price calculated (less any applicable front-end sales charge for
           Class A shares) after we receive your investment order in proper
           form. We reserve the right to reject any order for the purchase of
           Fund shares.

 10
<PAGE>
(SIDEBAR)
EASYINVEST-SM-
A PURCHASE PLAN THAT ALLOWS YOU TO TRANSFER MONEY AUTOMATICALLY FROM YOUR
CHECKING OR SAVINGS ACCOUNT OR FROM A MONEY MARKET FUND ON A SEMI-MONTHLY,
MONTHLY OR QUARTERLY BASIS. CONTACT YOUR MORGAN STANLEY DEAN WITTER FINANCIAL
ADVISOR FOR FURTHER INFORMATION ABOUT THIS SERVICE.
(END SIDEBAR)

<TABLE>
<CAPTION>
MINIMUM INVESTMENT AMOUNTS
- ------------------------------------------------------------------------------------------------
                                                                            MINIMUM INVESTMENT
                                                                          ----------------------
 INVESTMENT OPTIONS                                                       INITIAL    ADDITIONAL
<S>                                  <C>                                  <C>        <C>
- ------------------------------------------------------------------------------------------------
 Regular Accounts                                                          $ 1,000      $ 100
- ------------------------------------------------------------------------------------------------
 Individual Retirement Accounts:     Regular IRAs                          $ 1,000      $ 100
                                     Education IRAs                           $500      $ 100
- ------------------------------------------------------------------------------------------------
 EASYINVEST-SM-                      (Automatically from your checking
                                     or savings account or Money Market
                                     Fund)                                   $100*      $ 100*
- ------------------------------------------------------------------------------------------------
</TABLE>

*    Provided your schedule of investments totals $1,000 in twelve months.

           There is no minimum investment amount if you purchase Fund shares
           through: (1) the Investment Manager's mutual fund asset allocation
           plan, (2) a program, approved by the Fund's distributor, in which you
           pay an asset-based fee for advisory, administrative and/ or brokerage
           services, or (3) employer-sponsored employee benefit plan accounts.

           INVESTMENT OPTIONS FOR CERTAIN INSTITUTIONAL AND OTHER
           INVESTORS/CLASS D SHARES. To be eligible to purchase Class D shares,
           you must qualify under one of the investor categories specified in
           the "Share Class Arrangements" section of this PROSPECTUS.

           THREE DAY SETTLEMENT. Fund shares are sold through the Fund's
           distributor, Morgan Stanley Dean Witter Distributors Inc., on a
           normal three business day basis; that is, your payment for Fund
           shares is due on the third business day (settlement day) after you
           place a purchase order.

           SUBSEQUENT INVESTMENTS SENT DIRECTLY TO THE FUND. In addition to
           buying additional Fund shares for an existing account by contacting
           your Morgan Stanley Dean Witter Financial Advisor, you may send a
           check directly to the Fund. To buy additional shares in this manner:

           - Write a "letter of instruction" to the Fund specifying the name(s)
             on the account, the account number, the social security or tax
             identification number, the Class of shares you wish to purchase and
             the investment amount (which would include any applicable front-end
             sales charge). The letter must be signed by the account owner(s).

           - Make out a check for the total amount payable to: Morgan Stanley
             Dean Witter International Fund.

           - Mail the letter and check to Morgan Stanley Dean Witter Trust FSB
             at P.O. Box 1040, Jersey City, NJ 07303.

                                                                              11
<PAGE>
[ICON]  HOW TO EXCHANGE SHARES
- --------------------------------------------------------------------------------
           PERMISSIBLE FUND EXCHANGES. You may exchange shares of any Class of
           the Fund for the same Class of any other continuously offered
           Multi-Class Fund, or for shares of a No-Load Fund, Money Market Fund
           or Short-Term U.S. Treasury Trust, without the imposition of an
           exchange fee. See the inside back cover of this PROSPECTUS for each
           Morgan Stanley Dean Witter Fund's designation as a Multi-Class Fund,
           No-Load Fund or Money Market Fund. If a Morgan Stanley Dean Witter
           Fund is not listed, consult the inside back cover of that Fund's
           PROSPECTUS for its designation. For purposes of exchanges, shares of
           FSC Funds (subject to a front-end sales charge) are treated as Class
           A shares of a Multi-Class Fund.

           Exchanges may be made after shares of the Fund acquired by purchase
           have been held for thirty days. There is no waiting period for
           exchanges of shares acquired by exchange or dividend reinvestment.
           The current PROSPECTUS for each fund describes its investment
           objective(s), policies and investment minimums, and should be read
           before investment.

           EXCHANGE PROCEDURES. You can process an exchange by contacting your
           Morgan Stanley Dean Witter Financial Advisor or other authorized
           financial representative. Otherwise, you must forward an exchange
           privilege authorization form to the Fund's transfer agent -- Morgan
           Stanley Dean Witter Trust FSB -- and then write the transfer agent or
           call (800) 869-NEWS to place an exchange order. You can obtain an
           exchange privilege authorization form by contacting your Financial
           Advisor or other authorized financial representative or by calling
           (800) 869-NEWS. If you hold share certificates, no exchanges may be
           processed until we have received all applicable share certificates.

           An exchange to any Morgan Stanley Dean Witter Fund (except a Money
           Market Fund) is made on the basis of the next calculated net asset
           values of the Funds involved after the exchange instructions are
           accepted. When exchanging into a Money Market Fund, the Fund's shares
           are sold at their next calculated net asset value and the Money
           Market Fund's shares are purchased at their net asset value on the
           following business day.

           The Fund may terminate or revise the exchange privilege upon required
           notice. Certain services normally available to shareholders of Money
           Market Funds, including the check writing privilege, are not
           available for Money Market Fund shares you acquire in an exchange.

           TELEPHONE EXCHANGES. For your protection when calling Morgan Stanley
           Dean Witter Trust FSB, we will employ reasonable procedures to
           confirm that exchange instructions communicated over the telephone
           are genuine. These procedures may include requiring various forms of
           personal identification such as name, mailing address, social
           security or other tax identification number. Telephone instructions
           also may be recorded.

           Telephone instructions will be accepted if received by the Fund's
           transfer agent between 9:00 a.m. and 4:00 p.m. Eastern time, on any
           day the New York Stock Exchange is open

 12
<PAGE>
           for business. During periods of drastic economic or market changes,
           it is possible that the telephone exchange procedures may be
           difficult to implement, although this has not been the case with the
           Fund in the past.

           MARGIN ACCOUNTS. If you have pledged your Fund shares in a margin
           account, contact your Morgan Stanley Dean Witter Financial Advisor or
           other authorized financial representative regarding restrictions on
           the exchange of such shares.

           TAX CONSIDERATIONS OF EXCHANGES. If you exchange shares of the Fund
           for shares of another Morgan Stanley Dean Witter Fund there are
           important tax considerations. For tax purposes, the exchange out of
           the Fund is considered a sale of Fund shares -- and the exchange into
           the other Fund is considered a purchase. As a result, you may realize
           a capital gain or loss.

           You should review the "Tax Consequences" section and consult your own
           tax professional about the tax consequences of an exchange.

           FREQUENT EXCHANGES. A pattern of frequent exchanges may result in the
           Fund limiting or prohibiting, at its discretion, additional purchases
           and/or exchanges. The Fund will notify you in advance of limiting
           your exchange privileges.

           CDSC CALCULATIONS ON EXCHANGES. See the "Share Class Arrangements"
           section of this PROSPECTUS for a discussion of how applicable
           contingent deferred sales charges (CDSCs) are calculated for shares
           of one Morgan Stanley Dean Witter Fund that are exchanged for shares
           of another.

           For further information regarding exchange privileges, you should
           contact your Morgan Stanley Dean Witter Financial Advisor or call
           (800) 869-NEWS.

[ICON]  HOW TO SELL SHARES
- --------------------------------------------------------------------------------
           You can sell some or all of your Fund shares at any time. If you sell
           Class A, Class B or Class C shares, your net sale proceeds are
           reduced by the amount of any applicable CDSC. Your shares will be
           sold at the next price calculated after we receive your order to sell
           as described below.

<TABLE>
<CAPTION>
 OPTIONS            PROCEDURES
<S>                 <C>
- --------------------------------------------------------------------------------
 Contact your       To sell (redeem) your shares, simply call your Morgan
 Financial Advisor  Stanley Dean Witter Financial Advisor or other authorized
                    financial representative.
                    ------------------------------------------------------------
 ICON               Payment will be sent to the address to which the account is
                    registered or deposited in your brokerage account.
- --------------------------------------------------------------------------------
 By Letter          You can also sell your shares by writing a "letter of
                    instruction" that includes:
 ICON               - your account number;
                    - the dollar amount or the number of shares you wish to
                      sell;
                    - the Class of shares you wish to sell; and
                    - the signature of each owner as it appears on the account.
</TABLE>

                                                                              13
<PAGE>
<TABLE>
<S>                 <C>
- --------------------------------------------------------------------------------
 By Letter,         If you are requesting payment to anyone other than the
 continued          registered owner(s) or that payment be sent to any address
                    other than the address of the registered owner(s) or
                    pre-designated bank account, you will need a signature
                    guarantee. You can obtain a signature guarantee from an
                    eligible guarantor acceptable to Morgan Stanley Dean Witter
                    Trust FSB. (You should contact Morgan Stanley Dean Witter
                    Trust FSB at (800) 869-NEWS for a determination as to
                    whether a particular institution is an eligible guarantor.)
                    A notary public CANNOT provide a signature guarantee.
                    Additional documentation may be required for shares held by
                    a corporation, partnership, trustee or executor.
                    ------------------------------------------------------------
                    Mail the letter to Morgan Stanley Dean Witter Trust FSB at
                    P.O. Box 983, Jersey City, New Jersey 07303. If you hold
                    share certificates, you must return the certificates, along
                    with the letter and any required additional documentation.
                    ------------------------------------------------------------
                    A check will be mailed to the name(s) and address in which
                    the account is registered, or otherwise according to your
                    instructions.
- --------------------------------------------------------------------------------
 Systematic         If your investment in all of the Morgan Stanley Dean Witter
 Withdrawal Plan    Family of Funds has a total market value of at least
                    $10,000, you may elect to withdraw amounts of $25 or more,
                    or in any whole percentage of a Fund's balance (provided the
                    amount is at least $25), on a monthly, quarterly,
                    semi-annual or annual basis, from any Fund with a balance of
                    at least $1,000. Each time you add a Fund to the plan, you
                    must meet the plan requirements.
                    ------------------------------------------------------------
 ICON               Amounts withdrawn are subject to any applicable CDSC. A CDSC
                    may be waived under certain circumstances. See the Class B
                    waiver categories listed in the "Share Class Arrangements"
                    section of this PROSPECTUS.
                    ------------------------------------------------------------
                    To sign up for the Systematic Withdrawal Plan, contact your
                    Morgan Stanley Dean Witter Financial Advisor or call (800)
                    869-NEWS. You may terminate or suspend your plan at any
                    time. Please remember that withdrawals from the plan are
                    sales of shares, not Fund "distributions," and ultimately
                    may exhaust your account balance. The Fund may terminate or
                    revise the plan at any time.
- --------------------------------------------------------------------------------
</TABLE>

           PAYMENT FOR SOLD SHARES. After we receive your complete instructions
           to sell as described above, a check will be mailed to you within
           seven days, although we will attempt to make payment within one
           business day. Payment may also be sent to your brokerage account.

           Payment may be postponed or the right to sell your shares suspended
           under unusual circumstances. If you request to sell shares that were
           recently purchased by check, payment of the sale proceeds may be
           delayed for the minimum time needed to verify that the check has been
           honored (not more than fifteen days from the time we receive the
           check).

           TAX CONSIDERATIONS. Normally, your sale of Fund shares is subject to
           federal and state income tax. You should review the "Tax
           Consequences" section of this PROSPECTUS and consult your own tax
           professional about the tax consequences of a sale.

 14
<PAGE>
(SIDEBAR)
TARGETED DIVIDENDS-SM-
YOU MAY SELECT TO HAVE YOUR FUND DISTRIBUTIONS AUTOMATICALLY INVESTED IN OTHER
CLASSES OF FUND SHARES OR CLASSES OF ANOTHER MORGAN STANLEY DEAN WITTER FUND
THAT YOU OWN. CONTACT YOUR MORGAN STANLEY DEAN WITTER FINANCIAL ADVISOR FOR
FURTHER INFORMATION ABOUT THIS SERVICE.
(END SIDEBAR)

           REINSTATEMENT PRIVILEGE. If you sell Fund shares and have not
           previously exercised the reinstatement privilege, you may, within 35
           days after the date of sale, invest any portion of the proceeds in
           the same Class of Fund shares at their net asset value and receive a
           pro rata credit for any CDSC paid in connection with the sale.

           INVOLUNTARY SALES. The Fund reserves the right, on sixty days'
           notice, to sell the shares of any shareholder (other than shares held
           in an IRA or 403(b) Custodial Account) whose shares, due to sales by
           the shareholder, have a value below $100, or in the case of an
           account opened through EASYINVEST -SM-, if after 12 months the
           shareholder has invested less than $1,000 in the account.

           However, before the Fund sells your shares in this manner, we will
           notify you and allow you sixty days to make an additional investment
           in an amount that will increase the value of your account to at least
           the required amount before the sale is processed. No CDSC will be
           imposed on any involuntary sale.

           MARGIN ACCOUNTS. Certain restrictions may apply to Fund shares
           pledged in margin accounts with Dean Witter Reynolds or another
           authorized broker-dealer of Fund shares. If you hold Fund shares in
           this manner, please contact your Morgan Stanley Dean Witter Financial
           Advisor or other authorized financial representative for more
           details.

[ICON]  DISTRIBUTIONS
- --------------------------------------------------------------------------------
           The Fund passes substantially all of its earnings from income and
           capital gains along to its investors as "distributions." The Fund
           earns income from stocks and interest from fixed-income investments.
           These amounts are passed along to Fund shareholders as "income
           dividend distributions." The Fund realizes capital gains whenever it
           sells securities for a higher price than it paid for them. These
           amounts may be passed along as "capital gain distributions."

           The Fund declares income dividends separately for each Class.
           Distributions paid on Class A and Class D shares usually will be
           higher than for Class B and Class C because distribution fees that
           Class B and Class C pay are higher. Normally, income dividends and
           capital gains are distributed annually in December. The Fund may at
           times make payments from sources other than income or capital gains
           that represent a return of a portion of your investment.

                                                                              15
<PAGE>
           Distributions are reinvested automatically in additional shares of
           the same Class and automatically credited to your account, unless you
           request in writing that all distributions be paid in cash. If you
           elect the cash option, the Fund will mail a check to you no later
           than seven business days after the distribution is declared. No
           interest will accrue on uncashed checks. If you wish to change how
           your distributions are paid, your request should be received by the
           Fund's transfer agent, Morgan Stanley Dean Witter Trust FSB, at least
           five business days prior to the record date of the distributions.

[ICON]  TAX CONSEQUENCES
- --------------------------------------------------------------------------------
           As with any investment, you should consider how your Fund investment
           will be taxed. The tax information in this PROSPECTUS is provided as
           general information. You should consult your own tax professional
           about the tax consequences of an investment in the Fund.

           Unless your investment in the Fund is through a tax-deferred
           retirement account, such as a 401(k) plan or IRA, you need to be
           aware of the possible tax consequences when:

           - The Fund makes distributions; and

           - You sell Fund shares, including an exchange to another Morgan
             Stanley Dean Witter Fund.

           TAXES ON DISTRIBUTIONS. Your distributions are normally subject to
           federal and state income tax when they are paid, whether you take
           them in cash or reinvest them in Fund shares. A distribution also may
           be subject to local income tax. Any income dividend distributions and
           any short-term capital gain distributions are taxable to you as
           ordinary income. Any long-term capital gain distributions are taxable
           as long-term capital gains, no matter how long you have owned shares
           in the Fund.

           Every January, you will be sent a statement (IRS Form 1099-DIV)
           showing the taxable distributions paid to you in the previous year.
           The statement provides full information on your dividends and capital
           gains for tax purposes.

           TAXES ON SALES. Your sale of Fund shares normally is subject to
           federal and state income tax and may result in a taxable gain or loss
           to you. A sale also may be subject to local income tax. Your exchange
           of Fund shares for shares of another Morgan Stanley Dean Witter Fund
           is treated for tax purposes like a sale of your original shares and a
           purchase of your new shares. Thus, the exchange may, like a sale,
           result in a taxable gain or loss to you and will give you a new tax
           basis for your new shares.

 16
<PAGE>

           When you open your Fund account, you should provide your social
           security or tax identification number on your investment application.
           By providing this information, you will avoid being subject to a
           federal backup withholding tax of 31% on taxable distributions and
           redemption proceeds. Any withheld amount would be sent to the IRS as
           an advance tax payment.

[ICON]  SHARE CLASS ARRANGEMENTS
- --------------------------------------------------------------------------------
           The Fund offers several Classes of shares having different
           distribution arrangements designed to provide you with different
           purchase options according to your investment needs. Your Morgan
           Stanley Dean Witter Financial Advisor or other authorized financial
           representative can help you decide which Class may be appropriate for
           you.

           The general public is offered three Classes: Class A shares, Class B
           shares and Class C shares, which differ principally in terms of sales
           charges and ongoing expenses. A fourth Class, Class D shares, is
           offered only to a limited category of investors. Shares that you
           acquire through reinvested distributions will not be subject to any
           front-end sales charge or CDSC -- contingent deferred sales charge.
           Sales personnel may receive different compensation for selling each
           Class of shares. The sales charges applicable to each Class provide
           for the distribution financing of shares of that Class.

           The chart below compares the sales charge and annual 12b-1 fee
           applicable to each Class:

<TABLE>
<CAPTION>
CLASS   SALES CHARGE                              ANNUAL 12b-1 FEE
<S>     <C>                                       <C>
- ------------------------------------------------------------------
 A      Maximum 5.25% initial sales charge
        reduced for purchase of $25,000 or more;
        shares sold without an initial sales
        charge are generally subject to a 1.0%
        CDSC during the first year                          0.25%
- ------------------------------------------------------------------
 B      Maximum 5.0% CDSC during the first year
        decreasing to 0% after six years                    1.0%
- ------------------------------------------------------------------
 C      1.0% CDSC during the first year                     1.0%
- ------------------------------------------------------------------
 D      None                                            None
- ------------------------------------------------------------------
</TABLE>

                                                                              17
<PAGE>
(SIDEBAR)
FRONT-END SALES
CHARGE OR FSC
AN INITIAL SALES CHARGE YOU PAY WHEN PURCHASING CLASS A SHARES THAT IS BASED ON
A PERCENTAGE OF THE OFFERING PRICE. THE PERCENTAGE DECLINES BASED UPON THE
DOLLAR VALUE OF CLASS A SHARES YOU PURCHASE. WE OFFER THREE WAYS TO REDUCE YOUR
CLASS A SALES CHARGES - THE COMBINED PURCHASE PRIVILEGE, RIGHT OF ACCUMULATION
AND LETTER OF INTENT.
(END SIDEBAR)

         CLASS A SHARES  Class A shares are sold at net asset value plus an
         initial sales charge of up to 5.25%. The initial sales charge is
         reduced for purchases of $25,000 or more according to the schedule
         below. Investments of $1 million or more are not subject to an initial
         sales charge, but are generally subject to a contingent deferred sales
         charge, or CDSC, of 1.0% on sales made within one year after the last
         day of the month of purchase. The CDSC will be assessed in the same
         manner and with the same CDSC waivers as with Class B shares. Class A
         shares are also subject to a distribution (12b-1) fee of up to 0.25% of
         the average daily net assets of the Class.

         The offering price of Class A shares includes a sales charge (expressed
         as a percentage of the offering price) on a single transaction as shown
         in the following table:

<TABLE>
<CAPTION>
                                                      FRONT-END SALES CHARGE
                                          ----------------------------------------------
                                              PERCENTAGE OF       APPROXIMATE PERCENTAGE
 AMOUNT OF SINGLE TRANSACTION             PUBLIC OFFERING PRICE     OF AMOUNT INVESTED
<S>                                       <C>                     <C>
- ----------------------------------------------------------------------------------------
 Less than $25,000                                 5.25%                    5.54%
- ----------------------------------------------------------------------------------------
 $25,000 but less than $50,000                     4.75%                    4.99%
- ----------------------------------------------------------------------------------------
 $50,000 but less than $100,000                    4.00%                    4.17%
- ----------------------------------------------------------------------------------------
 $100,000 but less than $250,000                   3.00%                    3.09%
- ----------------------------------------------------------------------------------------
 $250,000 but less than $1 million                 2.00%                    2.04%
- ----------------------------------------------------------------------------------------
 $1 million and over                               0.00%                    0.00%
- ----------------------------------------------------------------------------------------
</TABLE>

           The reduced sales charge schedule is applicable to purchases of Class
           A shares in a single transaction by:

           - A single account (including an individual, trust or fiduciary
             account).

           - Family member accounts (limited to husband, wife and children under
             the age of 21).

           - Pension, profit sharing or other employee benefit plans of
             companies and their affiliates.

           - Tax-exempt organizations.

           - Groups organized for a purpose other than to buy mutual fund
             shares.

           COMBINED PURCHASE PRIVILEGE. You also will have the benefit of
           reduced sales charges by combining purchases of Class A shares of the
           Fund in a single transaction with purchases of Class A shares of
           other Multi-Class Funds and shares of FSC Funds.

           RIGHT OF ACCUMULATION. You also may benefit from a reduction of sales
           charges if the cumulative net asset value of Class A shares of the
           Fund purchased in a single transaction, together with shares of other
           Funds you currently own which were

 18
<PAGE>
           previously purchased at a price including a front-end sales charge
           (including shares acquired through reinvestment of distributions),
           amounts to $25,000 or more. Also, if you have a cumulative net asset
           value of all your Class A and Class D shares equal to at least $5
           million (or $25 million for certain employee benefit plans), you are
           eligible to purchase Class D shares of any Fund subject to the Fund's
           minimum initial investment requirement.

           You must notify your Morgan Stanley Dean Witter Financial Advisor or
           other authorized financial representative (or Morgan Stanley Dean
           Witter Trust FSB if you purchase directly through the Fund), at the
           time a purchase order is placed, that the purchase qualifies for the
           reduced charge under the Right of Accumulation. Similar notification
           must be made in writing when an order is placed by mail. The reduced
           sales charge will not be granted if: (i) notification is not
           furnished at the time of the order; or (ii) a review of the records
           of Dean Witter Reynolds or other authorized dealer of Fund shares or
           the Fund's transfer agent does not confirm your represented holdings.

           LETTER OF INTENT. The schedule of reduced sales charges for larger
           purchases also will be available to you if you enter into a written
           "letter of intent." A letter of intent provides for the purchase of
           Class A shares of the Fund or other Multi-Class Funds or shares of
           FSC Funds within a thirteen-month period. The initial purchase under
           a letter of intent must be at least 5% of the stated investment goal.
           To determine the applicable sales charge reduction, you may also
           include: (1) the cost of shares of other Morgan Stanley Dean Witter
           Funds which were previously purchased at a price including a
           front-end sales charge during the 90-day period prior to the
           distributor receiving the letter of intent, and (2) the cost of
           shares of other Funds you currently own acquired in exchange for
           shares of Funds purchased during that period at a price including a
           front-end sales charge. You can obtain a letter of intent by
           contacting your Morgan Stanley Dean Witter Financial Advisor or other
           authorized financial representative or by calling (800) 869-NEWS. If
           you do not achieve the stated investment goal within the thirteen-
           month period, you are required to pay the difference between the
           sales charges otherwise applicable and sales charges actually paid.

           OTHER FRONT-END SALES CHARGE WAIVERS. In addition to investments of
           $1 million or more, your purchase of Class A shares is not subject to
           a front-end sales charge (or CDSC upon sale) if your account
           qualifies under one of the following categories:

           - A trust for which Morgan Stanley Dean Witter Trust FSB provides
             discretionary trustee services.

           - Persons participating in a fee-based investment program (subject to
             all of its terms and conditions, including mandatory sale or
             transfer restrictions on termination) approved by the Fund's
             distributor pursuant to which they pay an asset-based fee for
             investment advisory, administrative and/or brokerage services.

                                                                              19
<PAGE>
(SIDEBAR)
CONTINGENT DEFERRED SALES CHARGE OR CDSC
A FEE YOU PAY WHEN YOU SELL SHARES OF CERTAIN MORGAN STANLEY DEAN WITTER FUNDS
PURCHASED WITHOUT AN INITIAL SALES CHARGE. THIS FEE DECLINES THE LONGER YOU HOLD
YOUR SHARES AS SET FORTH IN THE TABLE.
(END SIDEBAR)

           - Employer-sponsored employee benefit plans, whether or not qualified
             under the Internal Revenue Code, for which Morgan Stanley Dean
             Witter Trust FSB serves as trustee or Dean Witter Reynolds'
             Retirement Plan Services serves as recordkeeper under a written
             Recordkeeping Services Agreement ("MSDW Eligible Plans") which have
             at least 200 eligible employees.

           - An MSDW Eligible Plan whose Class B shares have converted to Class
             A shares, regardless of the plan's asset size or number of eligible
             employees.

           - A client of a Morgan Stanley Dean Witter Financial Advisor who
             joined us from another investment firm within six months prior to
             the date of purchase of Fund shares, and you used the proceeds from
             the sale of shares of a proprietary mutual fund of that Financial
             Advisor's previous firm that imposed either a front-end or deferred
             sales charge to purchase Class A shares, provided that: (1) you
             sold the shares not more than 60 days prior to the purchase of Fund
             shares, and (2) the sale proceeds were maintained in the interim in
             cash or a money market fund.

           - Current or retired Directors/Trustees of the Morgan Stanley Dean
             Witter Funds, such persons' spouses and children under the age of
             21, and trust accounts for which any of such persons is a
             beneficiary.

           - Current or retired directors, officers and employees of Morgan
             Stanley Dean Witter & Co. and any of its subsidiaries, such
             persons' spouses and children under the age of 21, and trust
             accounts for which any of such persons is a beneficiary.

         CLASS B SHARES  Class B shares are offered at net asset value with no
         initial sales charge but are subject to a contingent deferred sales
         charge, or CDSC, as set forth in the table below. For the purpose of
         calculating the CDSC, shares are deemed to have been purchased on the
         last day of the month during which they were purchased.

<TABLE>
<CAPTION>
                                          CDSC AS A PERCENTAGE
 YEAR SINCE PURCHASE PAYMENT MADE          OF AMOUNT REDEEMED
<S>                                       <C>
- --------------------------------------------------------------
 First                                             5.0%
- --------------------------------------------------------------
 Second                                            4.0%
- --------------------------------------------------------------
 Third                                             3.0%
- --------------------------------------------------------------
 Fourth                                            2.0%
- --------------------------------------------------------------
 Fifth                                             2.0%
- --------------------------------------------------------------
 Sixth                                             1.0%
- --------------------------------------------------------------
 Seventh and thereafter                           None
- --------------------------------------------------------------
</TABLE>

           Each time you place an order to sell or exchange shares, shares with
           no CDSC will be sold or exchanged first, then shares with the lowest
           CDSC will be sold or exchanged next. For any shares subject to a
           CDSC, the CDSC will be assessed on an amount equal to the lesser of
           the current market value or the cost of the shares being sold.

 20
<PAGE>

           CDSC WAIVERS. A CDSC, if otherwise applicable, will be waived in the
           case of:

           - Sales of shares held at the time you die or become disabled (within
             the definition in Section 72(m)(7) of the Internal Revenue Code
             which relates to the ability to engage in gainful employment), if
             the shares are: (i) registered either in your name (not a trust) or
             in the names of you and your spouse as joint tenants with right of
             survivorship; or (ii) held in a qualified corporate or
             self-employed retirement plan, IRA or 403(b) Custodial Account,
             provided in either case that the sale is requested within one year
             of your death or initial determination of disability.

           - Sales in connection with the following retirement plan
             "distributions:" (i) lump-sum or other distributions from a
             qualified corporate or self-employed retirement plan following
             retirement (or, in the case of a "key employee" of a "top heavy"
             plan, following attainment of age 59 1/2); (ii) distributions from
             an IRA or 403(b) Custodial Account following attainment of age 59
             1/2; or (iii) a tax-free return of an excess IRA contribution (a
             "distribution" does not include a direct transfer of IRA, 403(b)
             Custodial Account or retirement plan assets to a successor
             custodian or trustee).

           - Sales of shares held for you as a participant in an MSDW Eligible
             Plan.

           - Sales of shares in connection with the Systematic Withdrawal Plan
             of up to 12% annually of the value of each Fund from which plan
             sales are made. The percentage is determined on the date you
             establish the Systematic Withdrawal Plan and based on the next
             calculated share price. You may have this CDSC waiver applied in
             amounts up to 1% per month, 3% per quarter, 6% semi-annually or 12%
             annually. Shares with no CDSC will be sold first, followed by those
             with the lowest CDSC. As such, the waiver benefit will be reduced
             by the amount of your shares that are not subject to a CDSC. If you
             suspend your participation in the plan, you may later resume plan
             payments without requiring a new determination of the account value
             for the 12% CDSC waiver.

           All waivers will be granted only following the Distributor receiving
           confirmation of your entitlement. If you believe you are eligible for
           a CDSC waiver, please contact your Financial Advisor or call (800)
           869-NEWS.

           DISTRIBUTION FEE. Class B shares are subject to an annual
           distribution (12b-1) fee of 1.0% of the average daily net assets of
           Class B.

           CONVERSION FEATURE. After ten (10) years, Class B shares will convert
           automatically to Class A shares of the Fund with no initial sales
           charge. The ten year period runs from the last day of the month in
           which the shares were purchased, or in the case of Class B shares
           acquired through an exchange, from the last day of the month in which
           the original Class B shares were purchased; the shares will convert
           to Class A shares based on their relative net asset values in the
           month following the ten year period. At the same time, an equal
           proportion of Class B shares acquired through automatically
           reinvested distributions will convert to Class A shares on the same
           basis.

                                                                              21
<PAGE>

           In the case of Class B shares held in an MSDW Eligible Plan, the plan
           is treated as a single investor and all Class B shares will convert
           to Class A shares on the conversion date of the Class B shares of a
           Morgan Stanley Dean Witter Fund purchased by that plan.

           Currently, the Class B share conversion is not a taxable event; the
           conversion feature may be cancelled if it is deemed a taxable event
           in the future by the Internal Revenue Service.

           If you exchange your Class B shares for shares of a Money Market
           Fund, No-Load Fund or Short-Term U.S. Treasury Trust, the holding
           period for conversion is frozen as of the last day of the month of
           the exchange and resumes on the last day of the month you exchange
           back into Class B shares.

           EXCHANGING SHARES SUBJECT TO A CDSC. There are special considerations
           when you exchange Fund shares that are subject to a CDSC. When
           determining the length of time you held the shares and the
           corresponding CDSC rate, any period (starting at the end of the
           month) during which you held shares of a fund that does NOT charge a
           CDSC WILL NOT BE COUNTED. Thus, in effect the "holding period" for
           purposes of calculating the CDSC is frozen upon exchanging into a
           fund that does not charge a CDSC.

           For example, if you held Class B shares of the Fund for one year,
           exchanged to Class B of another Morgan Stanley Dean Witter
           Multi-Class Fund for another year, then sold your shares, a CDSC rate
           of 4% would be imposed on the shares based on a two year holding
           period -- one year for each Fund. However, if you had exchanged the
           shares of the Fund for a Money Market Fund (which does not charge a
           CDSC) instead of the Multi-Class Fund, then sold your shares, a CDSC
           rate of 5% would be imposed on the shares based on a one year holding
           period. The one year in the Money Market Fund would not be counted.
           Nevertheless, if shares subject to a CDSC are exchanged for a Fund
           that does not charge a CDSC, you will receive a credit when you sell
           the shares equal to the distribution (12b-1) fees, if any, you paid
           on those shares while in that Fund up to the amount of any applicable
           CDSC.

           In addition, shares that are exchanged into or from a Morgan Stanley
           Dean Witter Fund subject to a higher CDSC rate will be subject to the
           higher rate, even if the shares are re-exchanged into a Fund with a
           lower CDSC rate.

         CLASS C SHARES  Class C shares are sold at net asset value with no
         initial sales charge but are subject to a CDSC of 1.0% on sales made
         within one year after the last day of the month of purchase. The CDSC
         will be assessed in the same manner and with the same CDSC waivers as
         with Class B shares.

 22
<PAGE>

           DISTRIBUTION FEE. Class C shares are subject to an annual
           distribution (12b-1) fee of 1.0% of the average daily net assets of
           that Class. The Class C shares' distribution fee may cause that Class
           to have higher expenses and pay lower dividends than Class A or Class
           D shares. Unlike Class B shares, Class C shares have no conversion
           feature and, accordingly, an investor that purchases Class C shares
           may be subject to distribution (12b-1) fees applicable to Class C
           shares for an indefinite period.

         CLASS D SHARES  Class D shares are offered without any sales charge on
         purchases or sales and without any distribution (12b-1) fee. Class D
         shares are offered only to investors meeting an initial investment
         minimum of $5 million ($25 million for MSDW Eligible Plans) and the
         following investor categories:

           - Investors participating in the Investment Manager's mutual fund
             asset allocation program (subject to all of its terms and
             conditions, including mandatory sale or transfer restrictions on
             termination) pursuant to which they pay an asset-based fee.

           - Persons participating in a fee-based investment program (subject to
             all of its terms and conditions, including mandatory sale or
             transfer restrictions on termination) approved by the Fund's
             distributor pursuant to which they pay an asset-based fee for
             investment advisory, administrative and/or brokerage services.

           - Employee benefit plans maintained by Morgan Stanley Dean Witter &
             Co. or any of its subsidiaries for the benefit of certain employees
             of Morgan Stanley Dean Witter & Co. and its subsidiaries.

           - Certain unit investment trusts sponsored by Dean Witter Reynolds.

           - Certain other open-end investment companies whose shares are
             distributed by the Fund's distributor.

           MEETING CLASS D ELIGIBILITY MINIMUMS. To meet the $5 million ($25
           million for certain MSDW Eligible Plans) initial investment to
           qualify to purchase Class D shares you may combine: (1) purchases in
           a single transaction of Class D shares of the Fund and other Morgan
           Stanley Dean Witter Multi-Class Funds and/or (2) previous purchases
           of Class A and Class D shares of Multi-Class Funds and shares of FSC
           Funds you currently own, along with shares of Morgan Stanley Dean
           Witter Funds you currently own that you acquired in exchange for
           those shares.

         NO SALES CHARGES FOR REINVESTED CASH DISTRIBUTIONS  If you receive a
         cash payment representing an income dividend or capital gain and you
         reinvest that amount in the applicable Class of shares by returning the
         check within 30 days of the payment date, the purchased shares would
         not be subject to an initial sales charge or CDSC.

                                                                              23
<PAGE>

         PLAN OF DISTRIBUTION (RULE 12b-1 FEES)  The Fund has adopted a Plan of
         Distribution in accordance with Rule 12b-1 under the Investment Company
         Act of 1940 with respect to the distribution of Class A, Class B and
         Class C shares. The Plan allows the Fund to pay distribution fees for
         the sale and distribution of these shares. It also allows the Fund to
         pay for services to shareholders of Class A, Class B and Class C
         shares. Because these fees are paid out of the Fund's assets on an
         ongoing basis, over time these fees will increase the cost of your
         investment in these Classes and may cost you more than paying other
         types of sales charges.

 24
<PAGE>
MORGAN STANLEY DEAN WITTER
FAMILY OF FUNDS
                           The Morgan Stanley Dean Witter Family of Funds offers
                           investors a wide range of investment choices. Come on
                           in and meet the family!
- --------------------------------------------------------------------------------
 GROWTH FUNDS
- ---------------------------------

GROWTH FUNDS
Aggressive Equity Fund
American Opportunities Fund
Capital Growth Securities
Developing Growth Securities
Equity Fund
Growth Fund
Market Leader Trust
Mid-Cap Growth Fund
Special Value Fund
Value Fund

THEME FUNDS
Financial Services Trust
Health Sciences Trust
Information Fund
Natural Resource Development Securities
Precious Metals and Minerals Trust

GLOBAL/INTERNATIONAL FUNDS
Competitive Edge Fund - "Best Ideas" Portfolio
European Growth Fund
Fund of Funds - International Portfolio
Global Dividend Growth Securities
International Fund
International SmallCap Fund
Japan Fund
Pacific Growth Fund
- --------------------------------------------------------------------------------
 GROWTH AND INCOME FUNDS
- ---------------------------------
Balanced Growth Fund
Balanced Income Fund
Convertible Securities Trust
Dividend Growth Securities
Fund of Funds - Domestic Portfolio
Income Builder Fund
Mid-Cap Dividend Growth Securities
S&P 500 Index Fund
S&P 500 Select Fund
Strategist Fund
Value-Added Market Series/Equity Portfolio

THEME FUNDS
Global Utilities Fund
Real Estate Fund
Utilities Fund
- --------------------------------------------------------------------------------
 INCOME FUNDS
- ---------------------------------

GOVERNMENT INCOME FUNDS
Federal Securities Trust
Short-Term U.S. Treasury Trust
U.S. Government Securities Trust

DIVERSIFIED INCOME FUNDS
Diversified Income Trust

CORPORATE INCOME FUNDS
High Yield Securities
Intermediate Income Securities
Short-Term Bond Fund (NL)

GLOBAL INCOME FUNDS
World Wide Income Trust

TAX-FREE INCOME FUNDS
California Tax-Free Income Fund
Hawaii Municipal Trust (FSC)
Limited Term Municipal Trust (NL)
Multi-State Municipal Series Trust (FSC)
New York Tax-Free Income Fund
Tax-Exempt Securities Trust
- --------------------------------------------------------------------------------
 MONEY MARKET FUNDS
- ---------------------------------

TAXABLE MONEY MARKET FUNDS
Liquid Asset Fund (MM)
U.S. Government Money Market Trust (MM)

TAX-FREE MONEY MARKET FUNDS
California Tax-Free Daily Income Trust (MM)
N.Y. Municipal Money Market Trust (MM)
Tax-Free Daily Income Trust (MM)

There may be Funds created after this PROSPECTUS was published. Please consult
the inside front cover of a new Fund's prospectus for its designation, e.g.,
Multi-Class Fund or Money Market Fund.
Unless otherwise noted, each listed Morgan Stanley Dean Witter Fund, except for
Short-Term U.S. Treasury Trust, is a Multi-Class Fund. A Multi-Class Fund is a
mutual fund offering multiple Classes of shares. The other types of funds are:
NL - No-Load (Mutual) Fund; MM - Money Market Fund; FSC - A mutual fund sold
with a front-end sales charge and a distribution (12b-1) fee.
<PAGE>
                                                        PROSPECTUS - MAY 5, 1999
Additional information about the Fund's investments is available in the Fund's
ANNUAL AND SEMI-ANNUAL REPORTS TO SHAREHOLDERS. In the Fund's ANNUAL REPORT, you
will find a discussion of the market conditions and investment strategies that
significantly affected the Fund's performance during its last fiscal year. The
Fund's STATEMENT OF ADDITIONAL INFORMATION also provides additional information
about the Fund. The STATEMENT OF ADDITIONAL INFORMATION is incorporated herein
by reference (legally is part of this PROSPECTUS). For a free copy of any of
these documents, to request other information about the Fund, or to make
shareholder inquiries, please call:
                                 (800) 869-NEWS
You also may obtain information about the Fund by calling your Morgan Stanley
Dean Witter Financial Advisor or by visiting our Internet site at:
                            www.deanwitter.com/funds
Information about the Fund (including the STATEMENT OF ADDITIONAL INFORMATION)
can be viewed and copied at the Securities and Exchange Commission's Public
Reference Room in Washington, DC. Information about the Reference Room's
operations may be obtained by calling the SEC at (800) SEC-0330. Reports and
other information about the Fund are available on the SEC's Internet site
(www.sec.gov), and copies of this information may be obtained, upon payment of a
duplicating fee, by writing the Public Reference Section of the SEC, Washington,
DC 20549-6009.
                                                              INTERNATIONAL FUND

                               [BACK COVER PHOTO]

                                                        A MUTUAL FUND THAT SEEKS
                                                        LONG-TERM CAPITAL GROWTH

(INVESTMENT COMPANY ACT FILE NO. 811-09081)


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