The announcement was made by the Pierre-Berge-Saint Laurent Foundation, but the cause of death was not immediately released.

During a career that ran from 1957 to 2002, he was largely responsible for changing the way modern women dress, putting them into pants both day and night, into peacoats and safari jackets, into "le smoking" (as the French call a man's tuxedo jacket), and into leopard prints, trench coats and, for a time in the 1970's, peasant-inspired clothing in rich fabrics.

Saint Laurent often sought inspiration on the streets, bringing the Parisian beatnik style to couture runways and adapting the sailors' peacoats he found in Army-Navy stores in New York into jackets that found their way into fashionable women's wardrobes around the world. His glamorous evening clothes were often adorned with appliqués and beadwork inspired by artists like Picasso, Miró and Matisse. .

Among the women of style who wore his clothes were Catherine Deneuve, Paloma Picasso, Nan Kempner, Lauren Bacall, Marella Agnelli and Marie-Hélène de Rothschild.