
First choice for the role of Rizzo in Grease, she was allegedly dropped from consideration when her mother, Lucille Ball, called Paramount and said, "I used to own that studio; my daughter's not doing a screen test!" Ball actually owned the studio which was bought by Paramount, Desilu. The part went to Stockard Channing when the casting director remembered seeing her with Arnaz in the 'fifties-themed play' "Vanities.".
(imdb.com)