WHAT FILM DID MARNIE NIXON, WHO DUBBED THE SINGING FOR STARS IN A NUMBER OF POPULAR MOVIE MUSICALS, FINALLY MAKE HER SCREEN DEBUT? August 17, 2017 By Show answer THE SOUND OF MUSIC – IN WHICH SHE APPEARS AS SISTER SOPHIA. SHE DID THE SINGING FOR AUDREY HEPBURN IN MY FAIR LADY; NATALIE WOOD IN WEST SIDE STORY; AND DEBORAH KERR IN THE KING AND I More Entertainment QuestionsMore Movies Questions