The outfit that Kelly borrows from her Aunt Susan to wear to the party at the beginning of the film is the one-piece pants suit that
Sharon Tate wore in
Valley of the Dolls (1967). Sharon wears it in the scene where she is watching Neely on television and Tony comes home to tell her (and sister Miriam) that the studio has dropped his option. Sharon is also wearing it (sans the metal link belt Kelly will add) in the photo on the cover of the Valley of the Dolls soundtrack LP.
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