Francisco Costa: Don’t Call Him ‘Metal Mouth’

If Calvin Klein's normally boisterous Brazilian designer, Francisco Costa, looks a little dour this week, it's not because he's in a bad mood. He's gone Ugly Betty on us. About six months ago, Costa got fitted for braces on his bottom teeth. "I grind too much in my sleep," he told us. "I was chipping them." No one could see the mouth hardware during the shows in the fall, but since then, he's added a lovely set up top designed to blend in with his teeth. (We would have preferred a full-on metal mouth, with colored rubber bands to match his outfits.) "I can't smile for six months!" he says, smiling. It looks rather cute. —Jada Yuan