STAGE LEFT: The Yves Saint Laurent gang turned out Wednesday evening to fete the opening of the latest exhibit at the Pierre Bergé-Yves Saint Laurent Foundation, dedicated to the retired couturier's costumes for stage and film. Though Saint Laurent, who has been dealing with health issues recently, was absent, Catherine Deneuve reminisced about the outfits he crafted for her for "Belle de Jour." "I didn't know they still existed," she said, eyeing the black frock with a white satin collar she donned for her role of a bored housewife turned prostitute in the Luis Buñuel classic. Meanwhile, Bergé ushered François-Henri Pinault, Betty Catroux and Loulou de la Falaise around the exhibit. "I remember working on all these costumes," offered de la Falaise. "So much fun, but so many headaches. Actors are a nightmare!"
PICK-UP ARTIST: Talk about global warming. A Paris party Wednesday night for the forthcoming eco-friendly nightclub Greenhouse heated up fast, prompting Bruce Willis to remove his shirt on the dance floor of a packed Le Baron. Apparently it was just an attempt to blend in. "I'm just a normal guy from New Jersey: I pick my nose," he insisted afterward. Willis was in town with close friend, 20th Century Fox music maestro Robert Kraft, who is in Paris recording a film soundtrack. The two won't be partying late, though. "We can't stay out past 1 a.m," Willis joked. Mary-Kate Olsen left early to be in fine form to continue selling her latest clothing line, The Row, to retailers. "It's going well," she said, cheerily adding, "I have to do sales tomorrow!" Meanwhile, party hosts Carmen Kass and Jessica Stam admitted eco-friendly and nightclub are not obvious bed partners. "I'm not sure an eco-friendly nightclub is gonna fly, but it's raising awareness. Every little helps," added Stam, who drives a hybrid and is an ambassador for Charity Water, a nonprofit organization that builds wells in Africa.