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MFS(R) SUN LIFE SERIES TRUST
MFS(R) Emerging Growth Series
MFS(R) Managed Sectors Series
Supplement to the Current Prospectus
The description of portfolio managers under the "Management of the Series -
Investment Adviser" section is hereby restated as follows:
Emerging Growth Series - John W. Ballen, an Executive Vice President of
MFS, has been employed by the Adviser as a portfolio manager of the
Series since 1984. Toni Y. Shimura, a Vice President of MFS, has been
employed by the Adviser as a portfolio manager of the Series since
November 30, 1995 and employed by the adviser as a portfolio manager
since 1987. Stephen Pesek, a Vice President of the Adviser, will become
a portfolio manager of the Series on January 1, 1999. Mr. Pesek has
been employed by the Adviser since 1994.
Managed Sectors Series - Toni Y. Shimura, a Vice President of MFS has
been a portfolio manager of the Series since December 9, 1998 and
employed by the Adviser as a portfolio manager since 1987.
The date of this Supplement is December 21, 1998.
