"Only Jack and Lazaro could get all these people into a fluorescent-lit sunglasses store on a Thursday night." So pronoucned Amy Greenspon at the Ilori shop in Soho, where a who's who of the downtown scene—Mary-Kate Olsen, Terry Richardson, Olivier Zahm, Mirabelle Marden, Catherine Holstein, and Margherita Missoni—joined hostesses Melissa Bent, Jen Brill, Victoria Traina, and Greenspon herself to celebrate the launch of Proenza Schouler's new line of eyewear last night. (Victoria's sister Vanessa was on hostess duty, too, but missed her flight from L.A.) While Jack McCollough played dress-up with Olsen and Missoni, convincing them that their cat-eye frames were going to be the new Wayfarer, Lazaro Hernandez waxed philosophical about the crowd: "We're totally lucky to have the kind of support that we do. And the friends, too, that have always been there for us." The duo's Proenza-clad pals kicked up their heels as Benjamin Cho manned the turntables—that is, until a waiter spilled a tray of drinks behind the DJ booth and a renegade candle lit a frizzy-haired girl's mane on fire simultaneously. "They're not going to let us back in here," McCollough said. "So if you want to buy anything, do it now."