Conversation so far:
Who was in charge of the casting for All About Eve?
Darryl F. Zanuck was in charge of casting for All About Eve.
Who auditioned for All About Eve?
The actresses originally considered to play Margo Channing were Susan Hayward, rejected as too young, Marlene Dietrich, dismissed as too German, and Gertrude Lawrence, who was too demanding.
Did Lawrence get the role of Margo Channing?
The role of Margo Channing eventually went to Bette Davis.
Did anyone else audition for All About Eve?
Zsa Zsa Gabor actively sought the role of Phoebe without realizing the producers were considering her, along with Angela Lansbury, for Miss Casswell.
Who else auditioned for All About Eve?
Marilyn Monroe, relatively unknown at the time, was cast as Miss Casswell, referred to by DeWitt as a graduate of the Copacabana School of Dramatic Art.“
Who replaced Claudette Colbert in All About Eve?
Mankiewicz briefly considered Ingrid Bergman for the aging diva role, before replacing Claudette Colbert with Bette Davis.

Question: Did Davis stay in the role?
Self-contained rewrite: Did Bette Davis stay in the role for All About Eve?