The main actors in the movie Grease were notably older than the high school characters they portrayed:
- John Travolta (Danny Zuko) was 23 years old during filming.
- Olivia Newton-John (Sandy Olsson) was 29 years old during filming.
- Stockard Channing (Rizzo) was 33 years old during filming.
- Jeff Conaway (Kenickie) was 26 years old.
- Dennis Stewart (Leo Balmudo) was 30 years old.
- Annette Charles (Cha Cha) was 29 years old.
The characters they played were typically 17-18 years old, so the actors were much older than their roles. The casting director has said this choice was intentional to better suit the fantasy and style of the movie rather than strict realism.
