Lindsey Wixson may be one of our favorite gap-toothed models, but that's her only imperfection. The 17-year-old model, known for her plump pout and precious dimples recently took a tumble on the Versace Spring 2012 runway (an incident conveniently edited out of the show's video below). While she recovered in time to continue her catwalk, we wonder what Donatella had to say after the show. This isn't the first time Wixson has stumbled; the Wichita, Kansas native also fell last May when walking the...