KARL WHO?: “I find it flattering. Somebody offered one to me and now Colette has picked it up,” Karl Lagerfeld said at Dior Homme on Sunday, referring to the “Karl Who?” Naco-Paris canvas tote that he’s been spotted carrying around town. Filmmaker Zoe Cassavetes darted about snapping show guests, including Lily Cole and Usher, as part of a photo series for Dior Homme designer Kris Van Assche, which will include the show’s casting in Argentina. “I’m going to take pictures of Antoine Arnault — the boss,” declared Cassavetes, who has two movies to finish by the end of the year. “I just saw Sofia [Coppola] in L.A. She just started a new film, and we were both saying, ‘It’s all about the calm.’” Seated in the front row, model Fernanda Tavares said she’s looking forward to getting back to work after giving birth — but not for too long. “I’m already thinking about the next one,” she confessed.