Actress Catherine Deneuve was once his muse. He dressed her for the films Belle de Jour (1967), Heartbeat (1968), Mississippi Mermaid (1969), Un Flic (1972), and The Hunger (1983).

His Paris salon was frequented by a posh clientèle including: Princess Lee Radziwill and her sister, Jacqueline Kennedy.

Was the protégé of Christian Dior.

Son of Charles Saint Laurent and Lucienne Mathieu.

Attained the dubious distinction in 2009 of meriting the number one position on Forbes magazine's list of "Top-Earning Dead Celebrities". YSL's amassed fortune of $350 million after his death, placed the fashion icon ahead of the likes of 'Michael Jackson (I)' and Elvis Presley.

Longtime companion of Pierre Bergé.