The scenes calling for Wanda Fleming (Bette Davis) to play the cello used close-ups of the hands of British classical cellist Amaryllis Fleming (1925-1999).
When Bette Davis is playing the cello outside the theater, the marquee advertises "Margo Channing in 'Remembrance'." Margo Channing is the name of the character Davis played in All About Eve (1952), an actress who was appearing in a Broadway play called "Remembrance".
Gabrielle Drake appears topless
4K restoration released on Blu Ray (Region B) by Indicator, May 2022. Cat# 225. Special features on Ltd Edition version includes The John Player Lecture with Bette Davis from 1971 and exclusive 38 page booklet with a new essay by Laura Mayne and lots more bonus content exclusive to this release.