MORGAN STANLEY NEW DISCOVERIES FUND

                   PROXY FOR SPECIAL MEETING OF SHAREHOLDERS


                          TO BE HELD DECEMBER 16, 2003

     The undersigned shareholder of Morgan Stanley New Discoveries Fund does
hereby appoint Barry Fink, Ronald E. Robison and Joseph J. McAlinden and each
of them, as attorneys-in-fact and proxies of the undersigned, each with the
full power of substitution, to attend the Special Meeting of Shareholders of
Morgan Stanley New Discoveries Fund to be held on December 16, 2003, in
Conference Room 209, 2nd Floor, 1221 Avenue of the Americas, New York, New York
10020 at 10:00 a.m. New York time, and at all adjournments thereof and to vote
the shares held in the name of the undersigned on the record date for said
meeting for the Proposal specified on the reverse side hereof. Said
attorneys-in-fact shall vote in accordance with their best judgment as to any
other matter.





                          (Continued on reverse side)

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED HEREIN
BY THE UNDERSIGNED SHAREHOLDER. IF NO DIRECTION IS MADE, THIS PROXY WILL BE
VOTED "FOR" THE PROPOSAL SET FORTH ON THE REVERSE HEREOF AND AS RECOMMENDED BY
THE BOARD OF TRUSTEES.

      IMPORTANT--THIS PROXY MUST BE SIGNED AND DATED ON THE REVERSE SIDE.


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THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF TRUSTEES

                                                                                   

TO VOTE BY MAIL, PLEASE COMPLETE AND RETURN THIS CARD               PLEASE MARK VOTES AS
YOU ALSO MAY VOTE A PROXY BY TOUCHTONE PHONE OR BY INTERNET         IN THE EXAMPLE USING    [X]
(SEE ENCLOSED VOTING INFORMATION CARD FOR FURTHER INSTRUCTIONS)     BLACK OR BLUE INK

TO VOTE A PROXY BY PHONE, call Toll-Free: 1-800-690-6903

TO VOTE A PROXY BY INTERNET, visit our Website(s): WWW/MSDWT.COM or WWW.PROXYVOTE.COM


                           FOR  AGAINST  ABSTAIN
The Proposal:              [ ]    [ ]      [ ]

Approval of the Agreement and Plan of
Reorganization, dated as of July 31, 2003, pursuant to which substantially all
of the assets of Morgan Stanley New Discoveries Fund would be combined with
those of Morgan Stanley Developing Growth Securities Trust and shareholders of
Morgan Stanley New Discoveries Fund would become shareholders of Morgan Stanley
Developing Growth Securities Trust receiving shares in Morgan Stanley
Developing Growth Securities Trust with a value equal to the value of their
holdings in Morgan Stanley New Discoveries Fund.

Please sign personally. If the shares are registered in more than one name,
each joint owner or each fiduciary should sign personally. Only authorized
officers should sign for corporations.

                                  Please make sure to sign and date this Proxy
                                  using black or blue ink.


                                  Date
                                       -----------------------------------------


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                                          Shareholder sign in the box above

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                                     Co-Owner (if any) sign in the box above

   -   -    PLEASE FOLD AND DETACH AT PERFORATION ALONG DOTTED LINES    -   -

                      MORGAN STANLEY NEW DISCOVERIES FUND

                                   IMPORTANT


               USE ONE OF THE THREE EASY WAYS TO VOTE YOUR PROXY

 1. BY MAIL. PLEASE DATE, SIGN AND RETURN THE ABOVE PROXY CARD IN THE ENCLOSED
    POSTAGE PAID ENVELOPE.

 2. BY INTERNET. HAVE YOUR PROXY CARD AT HAND. GO TO THE "VOTE YOUR PROXY HERE"
    LINK ON THE WEBSITE WWW.MSDWT.COM OR WWW.PROXYVOTE.COM. ENTER YOUR 12
    DIGIT CONTROL NUMBER LOCATED ON THE PROXY CARD AND FOLLOW THE SIMPLE
    INSTRUCTIONS.

 3. BY TELEPHONE. HAVE YOUR PROXY CARD AT HAND. CALL 1-800-690-6903 ON A
    TOUCHTONE PHONE. ENTER YOUR 12-DIGIT CONTROL NUMBER LOCATED ON THE PROXY
    CARD AND FOLLOW THE SIMPLE RECORDED INSTRUCTIONS.