You can smile with your eyes, or with your teeth, and fashion always seems to favor the serious. Some supers are never caught with their happy faces on, while some thrive with a big smirk. Ever seen Kate Moss smiling? Remember the time Arizona Muse was on the cover of Vogue with a big fat grin? Did you know Lara Stone once smiled in a photo? And do you wonder what happens to Lindsay Wixson's cheeks when she says cheese? These are all questions with surprising answers. See the smizes and the smiles, and tell us which you like better.