Sandy Olsson Grease Sandy, you must start anew Don't you know what you must do? Hold your head high Take a deep breath and sigh Goodbye to Sandra Dee Watch Olivia Newton John Look Back at Her Iconic Grease Outfit When Olivia Newton John was cast as Sandy in "Grease" (1978), her character's background had to be changed to accommodate the actress' own background. In the original Broadway musical, Sandy was an all American Grease Sandy Summer Nights Women's Costume Cracker Jack Costumes Brisbane periodedits : Olivia Newton John as Sandy Olsson GREASE (1978)