The fashion legend Yves Saint-Laurent died yesterday but, obviously, his clothes will live forever. At the movies, he mostly dressed the stars who wore his designs off screen, Catherine Deneuve being the most luminous and eroticized of his muses. Saint-Laurent did the dresses for her in Luis Buñuel's S&M classic; "Belle du Jour" (1967); Alain Cavalier's "Heartbeart" (1968); "Mississippi Mermaid" (1968), Francois Truffaut's idea of how shady paperback mystery novels should work on screen, (which is to say like an unhappy vacation getaway); Jean-Pierre Melville's smoldering heist picture "Un Flic" (1972), "avec Catherine Deneuve dans le role de Cathy"; and, most ridiculously, Tony Scott's "The Hunger" (1983). The big question with Saint-Laurent's clothes on Deneuve was whether she'd be taking them off, so it's OK if you don't remember what he designed for her to wear. But he helped make the most arresting skins for her to consider peeling off.