Jean Cocteau cast Auger in an uncredited role as a tall ballerina in Testament of Orpheus (1960). When she was 18, she married the 43-year-old writer-director Pierre Gaspard-Huit, and he cast her in several films, including Le Masque de fer (1962) and Kali Yug: Goddess of Vengeance (1963). In 1966 she co-starred in the World War II drama Triple Cross with Yul Brynner and Christopher Plummer.
Auger was born in Paris, France. She attended St. Joan of Arc College and later the Conservatoire de Paris, where she performed dramatic roles. She made her film debut when she was still in school.
