Make no mistake, spring is for partying — and last Thursday’s traveling band of revelers was a hint of things to come. To christen her new Ghost boutique on Bond Street, Tanya Sarne turned the basement into a dark and sweaty dance floor faintly reminiscent, said several guests, of Save the Robots. Paul Sevigny, brother of Chloe, manned the turntables as models Erin O’Connor and Alek Wek swayed to the music. Most of the crew made its way to Sway for the after-party and ended up at the model Natane’s birthday bash at Eugene’s on 24th Street. Gisele Bunchen, Amber Valetta (“Is she pregnant?” some partygoers whispered), Frankie Rayder, May Anderson and Kiara made up the mannequin contingent, while Puff Daddy turned up with a posse that included Kimora Lee and Chris Rock. Last to arrive were Leonardo DiCaprio and Tobey Maguire — but not even Leo could drag Gisele from the dance floor. Lost in the music, arms in the air, she cold-shouldered him when he tried to steal a moment beneath the disco ball. Leo returned to his banquette, and by 2:30 in the morning, as Gisele kept shaking it, he and Frankie were deep in conversation.