Born Maria Luisa Longo in Venice, at young age Longo moved to Rome where she started a career as a model; she entered the Miss Italia beauty contest, winning the Miss Cinema and the Miss Lazio titles. After having appeared in a number of commercials, Longo made her acting debut in 1968, in the Antonio Margheriti's giallo film The Young, the Evil, and the Savage. She then appeared in a number of films, sometimes in main roles, and was especially active in the Nazisploitation and commedia sexy all'italiana genres.