Bette Davis fell in love with her co-star Gary Merrill during the shoot of this movie, and the two married in July 1950, a few weeks after filming was completed. They adopted a baby girl, whom they named Margot.
Upon learning that he had cast Bette Davis, one of her former directors, Edmund Goulding, rang up Joseph L. Mankiewicz and warned him that she would grind him down into a fine powder. This was a reference to her on-set behavior, not the least of which was rewriting her dialogue. The warning proved to be unnecessary, however, since Davis knew better than to mess with Mankiewicz's finely tuned screenplay. In fact, Mankiewicz found her to be one of the most professional and agreeable actresses he'd ever worked with.
Holds the record for the most female acting Oscar nominations in a single film with four: Anne Baxter and Bette Davis' for Best Actress and Celeste Holm and Thelma Ritter for Best Supporting Actress. Also shares the record for most Oscar nominations (14) with Titanic (1997) and La La Land (2016).
Co-star Celeste Holm spoke about her experience with Bette Davis on the first day of shooting: "I walked onto the set... on the first day and said, 'Good morning,' and do you know her reply? She said, 'Oh shit, good manners.' I never spoke to her again - ever."
Years later, Bette Davis said in an interview, "Filming All About Eve was a very happy experience... the only bitch in the cast was Celeste Holm."