All About Eve

The film stars Bette Davis as Margo Channing, a highly regarded but aging Broadway star. Anne Baxter plays Eve Harrington, an ambitious young fan who insinuates herself into Channing's life, ultimately threatening Channing's career and her personal relationships. The film co-stars George Sanders, Celeste Holm, and features Gary Merrill, Hugh Marlowe, Thelma Ritter, Marilyn Monroe in one of her earliest roles, Gregory Ratoff, Barbara Bates and Walter Hampden.

Question: was all about eve marilyn monroe's first movie
Answer: no