Yves Saint Laurent made a night of it by presenting the Spring / Summer 2010 runway show at 7:30pm in the evening with a soiree fit for a king… or in this case, a prince.

A-list stars came out in force to support the Parisian luxury brand but the highlight was a rare appearance by rock star Prince. “It’s mine, I designed it,” said Prince, in a spangled suit with a bold gold necklace nesting in his chest hair.

So who’s Prince’s favorite model? “She is,” he said, pointing at his date, American singer Bria Valente, whom he held hands with all night.

Other celebrities in attendance were Katy Perry, Kate Moss and her rocker beau Jamie Hince, Yasmin Le Bon and supermodel Claudia Schiffer who was seated next to Salma Hayek’s hubby, François-Henri Pinault.

Style.com said of the collection: “The parts will likely separate into perfectly sellable working-woman pieces for the stores, and the more edgy elements will get bundled off to editorial shoots. But in terms of a cohesive statement, they never quite seemed to relate.”

WWD said: “Diversity made the lineup a bit discordant, but it ensures that, come spring, Pilati’s Saint Laurent woman will find plenty to suit her.”