[Michelle Trachtenberg surveys the wares. Photo by Michael Loccisano for Getty] While we Guest of a Guesters were busy strolling around Cole Haan's uptown boutique last night, the Guess kids went down south to celebrate the opening of their flagship SoHo boutique. Former child spy Michelle Trachtenberg hosted Guess's mini-gala in conjunction with Marie Claire magazine -- which strikes me a mishmash of "brand" partners, but what the hell do I know about marketing. Anyway. A number of fashionable notables turned up: among them were Victoria's Secret angel Selita Ebanks and our BFFL/golfette Stephanie Wei. According to a friend of ours who was at the party, flocks of admirers were swarming around softcore porn star/heiress Lydia Hearst. They also swarmed around the quirkily styled Amber Rose, Kanye's plaything/girlfriend. There was tuna tartare. It was crowded and loud.