Cadillac started her music career as an accordionist under the alias "Rita Rella" at the age of 13. In 1952, she was a pin-up model and took the name "Rita Cadillac" ( ) at Crazy Horse where she began to work as an exotic dancer. She was also a dancer of Folies Bergère in the 1950s.
Cadillac appeared in many French films such as Soirs de Paris (1954), Porte océane (1958), La prostitution (1962), Un clair de lune à Maubeuge (1962), and Any Number Can Win (1963), becoming a renowned figure throughout Europe. In 1981, she appeared in the miniseries and film Das Boot, as the club singer Monique, in the town of La Rochelle.
- Prostitution (1963)