ZWEIG DIMENNA PARTNERS L P
SC 13D/A, 1997-05-23
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                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549
                                  SCHEDULE 13D

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                            
                            (AMENDMENT NO.   5  )*  
                                           -----

                      Pacific Sunwear of California, Inc.
         -------------------------------------------------------------
                                (Name of Issuer)

                                 Common Stock
              ---------------------------------------------------
                        (Title of Class of Securities)

                                   694873100
                   -----------------------------------------
                                 (CUSIP Number)

      Stuart Panish, c/o Zweig-DiMenna Associates LLC, 900 Third Avenue,
                   New York, New York 10022  (212) 451-1100
- --------------------------------------------------------------------------------
(Name, Address and Telephone Number of Person Authorized to Receive Notices and 
Communications)

                                 May 21, 1997
                  -------------------------------------------
            (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report 
the acquisition which is the subject of this Schedule 13D, and is filing this 
schedule because of Rule 13d-1(b)(3) or (4), check the following box [_].

Check the following box if a fee is being paid with this statement [_]. (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).

Note: Six copies of this statement, including all exhibits, should be filed with
the Commission. See Rule 13d-1(a) for other parties to whom copies are to be 
sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, 
and for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

<PAGE>
 
                                 SCHEDULE 13D

CUSIP NO. 694873100                                         Page 2 of __ Pages

1   NAME OF REPORTING PERSON
    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

       Zweig-DiMenna Partners, L.P., Zweig-DiMenna International Limited
       Zweig-DiMenna International Managers, Inc., on behalf of a discretionary 
         account
       Gotham Advisors, Inc., on behalf of a discretionary account

2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a) [_]
                                                                       (b) [_]

3   SEC USE ONLY

4   SOURCE OF FUNDS*  WC

5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
    ITEMS 2(d) or 2(e)                                                     [_]

6   CITIZENSHIP OR PLACE OF ORGANIZATION

         Zweig-DiMenna Partners, L.P.-New York, Zweig-DiMenna International 
           Limited - British Virgin Islands
         Zweig-DiMenna International Managers, Inc., on behalf of a 
           discretionary account - Delaware
         Gotham Advisors, Inc., on behalf of a discretionary account - Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

7   SOLE VOTING POWER

         Zweig-DiMenna Partners, L.P. - 95,800; Zweig-DiMenna International 
           Limited - 198,100
         Zweig-DiMenna International Managers, Inc., on behalf of a 
           discretionary account - 46,250
         Gotham Advisors, Inc., on behalf of a discretionary account - 21,750

8    SHARED VOTING POWER

         0

9    SOLE DISPOSITIVE POWER

         Zweig-DiMenna Partners, L.P. - 95,800; Zweig-DiMenna International 
           Limited - 198,100
         Zweig-DiMenna International Managers, Inc., on behalf of a 
           discretionary account - 46,250
         Gotham Advisors, Inc., on behalf of a discretionary account - 21,750

10   SHARED DISPOSITIVE POWER

        0

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         Zweig-DiMenna Partners, L.P. - 95,800; Zweig-DiMenna International 
           Limited - 198,100
         Zweig-DiMenna International Managers, Inc., on behalf of a 
           discretionary account - 46,250
         Gotham Advisors, Inc., on behalf of a discretionary account - 21,750

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 INCLUDES CERTAIN SHARES*
                                                                             [_]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11

         Total - 4.4%

         Zweig-DiMenna Partners, L.P. - 1.2%; Zweig-DiMenna International
           Limited - 2.4%
         Zweig-DiMenna International Managers, Inc., on behalf of a 
           discretionary account - 0.6%
         Gotham Advisors, Inc., on behalf of a discretionary account - 0.2%

14  TYPE OF REPORTING PERSON*

         Zweig-DiMenna Partners, L.P. - PN
         Zweig-DiMenna International Limited - CO
         Zweig-DiMenna International Managers, Inc. - CO
         Gotham Advisors, Inc. - CO

<PAGE>
 
                        SCHEDULE 13D - AMENDMENT NO. 5


     Zweig-DiMenna International Limited, Zweig-DiMenna Partners, L.P., Zweig-
DiMenna International Managers, Inc. and Gotham Advisors, Inc. ("The Investors")
hereby amend the Schedule 13D, filed with respect to shares of common stock, par
value $.01 per share ("Shares") of Pacific Sunwear of California, Inc.

ITEM 3 SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATIONS

     The first sentence of Item 3 is amended to read as follows:

     "The securities of Pacific Sunwear of California, Inc. were purchased at an
     aggregate cost of $5,801,476 with the investment capital of Zweig-DiMenna
     International Limited, Zweig-DiMenna Partners, L.P., the discretionary
     account managed by Zweig-DiMenna International Managers, Inc. (the "ZDIM
     Account") and the discretionary account managed by Gotham Advisors, Inc.
     (the "Gotham Account")."

ITEM 5 INTEREST IN SECURITIES OF THE ISSUER

     The answer to Item 5 is amended to read as follows:

<TABLE>                                                                        
<S>                                                          <C>     <C>        
     a.   Aggregate number of shares beneficially owned:                       
                                                                               
            Zweig-DiMenna International Limited              --      198,100   
                                                                               
            Zweig-DiMenna Partners, L.P.                     --       95,800   
                                                                               
            ZDIM Account                                     --       46,250   
                                                                               
            Gotham Account                                   --       21,750   
                                                                               
          Percent of class beneficially owned:                                 
                                                                               
            Zweig-DiMenna International Limited              --          2.4%  
                                                                               
            Zweig-DiMenna Partners, L.P.                     --          1.2%  
                                                                               
            ZDIM Account                                     --          0.6%  
                                                                               
            Gotham Account                                   --          0.2%   
</TABLE>
<PAGE>
 
<TABLE>                                                                         
<CAPTION> 
<S>                                                          <C>     <C> 
     b.   Number of shares as to which there is sole power 
          to vote:

            Zweig-DiMenna International Limited              --      198,100    
                                                                             
            Zweig-DiMenna Partners, L.P.                     --       95,800 
                                                                             
            ZDIM Account                                     --       46,250 
                                                                             
            Gotham Account                                   --       21,750 
                                                                             
          Number of shares as to which there is shared 
          power to vote or to direct the vote:
 
            Zweig-DiMenna International Limited              --            0   
                                                                              
            Zweig-DiMenna Partners, L.P.                     --            0  
                                                                              
            ZDIM Account                                     --            0  
                                                                              
            Gotham Account                                   --            0  
 
          Number of shares as to which there is sole power 
          to dispose or to direct the disposition:
 
            Zweig-DiMenna International Limited              --       198,100  
                                                                              
            Zweig-DiMenna Partners, L.P.                     --        95,800 
                                                                              
            ZDIM Account                                     --        46,250 
                                                                              
            Gotham Account                                   --        21,750 
 
          Number of shares as to which there is shared 
          power to dispose or to direct the disposition:
 
            Zweig-DiMenna International Limited              --             0
                                                                             
            Zweig-DiMenna Partners, L.P.                     --             0
                                                                             
            ZDIM Account                                     --             0
                                                                             
            Gotham Account                                   --             0
</TABLE>

<PAGE>
 
     c.   Since May 15, 1997, the date of The Investors last Schedule 13D
          filing, Zweig-DiMenna International Limited, Zweig-DiMenna Partners,
          L.P., the ZDIM Account and the Gotham Account sold the Shares on the
          open market on the following dates and at the following prices and in
          the following amounts:

<TABLE>                       
<CAPTION> 
            ZWEIG-DIMENNA INTERNATIONAL LIMITED
          <S>            <C>  
            DATE         DESCRIPTION OF SALE

            5/16/97      Sold 8,200 shares at $35.00 a share

            5/19/97      Sold 8,800 shares at $35.50 a share

            5/21/97      Sold 27,400 shares at $35.2375 a share

            ZWEIG-DIMENNA PARTNERS, L.P.

            DATE         DESCRIPTION OF SALE

            5/16/97      Sold 4,000 shares at $35.00 a share

            5/19/97      Sold 4,100 shares at $35.50 a share

            5/21/97      Sold 13,200 shares at $35.2375 a share

            ZDIM ACCOUNT

            DATE         DESCRIPTION OF SALE

            5/16/97      Sold 1,900 shares at $35.00 a share

            5/19/97      Sold 1,000 shares at $35.50 a share

            5/21/97      Sold 6,400 shares at $35.2375 a share

            GOTHAM ACCOUNT

            DATE         DESCRIPTION OF SALE

            5/16/97      Sold 900 shares at $35.00 a share

            5/19/97      Sold 1,100 shares at $35.50 a share

            5/21/97      Sold 3,000 shares at $35.2375 a share
</TABLE> 
<PAGE>
 
     d.   Not Applicable.

     e.   The Investors ceased to be the beneficial owner of more than 5% of the
          shares of the Company on May 21, 1997.
<PAGE>
 
                                   SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


Date: May 21, 1997


                   ZWEIG-DiMENNA INTERNATIONAL LIMITED             
                                                                               
                   By:  Zweig-DiMenna International Managers, Inc.,            
                        Investment Manager                                     
                                                                               
                                                                               
                   By:  /s/  Joseph A. DiMenna                                 
                      ----------------------------------------------------------
                      Name:  Joseph A. DiMenna                                 
                      Title: Executive Vice President                          
                                                                               
                                                                               
                   ZWEIG-DiMENNA PARTNERS, L.P.                                
                                                                               
                                                                               
                   By:  Zweig-DiMenna Associates LLC,                          
                         Managing General Partner                              
                                                                               
                                                                               
                   By:  /s/  Joseph A. DiMenna                                 
                      ----------------------------------------------------------
                      Name:  Joseph A. DiMenna
                      Title: A Managing Director of the Managing General Partner


                   ZWEIG-DiMENNA INTERNATIONAL MANAGERS, INC.


                   By:  /s/  Joseph A. DiMenna
                      ----------------------------------------------------------
                      Name:  Joseph A. DiMenna
                      Title: Executive Vice President


                   GOTHAM ADVISORS, INC.


                   By:  /s/  Joseph A. DiMenna
                      ----------------------------------------------------------
                      Name:  Joseph A. DiMenna
                      Title: Vice President


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