Aw, little Karlie Kloss is all grown up. It seems like only yesterday that, in her first show season, the St. Louis native was gushing about Jason Wu and closing Marc Jacobs. The 19-year-old has long since caught the eye of every designer and photographer in the industry. And with the crossover into legal adulthood comes the opportunity (obligation?) to boast her ballet-trained body in increasingly revealing editorials. Mario Testino was the first to get Karlie in the buff in a fairly innocuous shoot for Allure. Now Steven Meisel has lensed the model for the cover of Italian Vogue's December issue showing quite the bit of asscheek. And inside, nothing but heels and a sombrero.