We hope nobody decides to light up at downtown designer Alexander Wang‘s after-party on Saturday night. Sources say the top- secret soiree is being held at the Mobil gas station on West 15th Street at 10th Avenue. “They’re putting up tents over the gas pumps,” said our snitch. We hear the hipsters will be out in droves to celebrate the designer and sip limited-edition Belvedere Silvercocktails.