Karlie Kloss on Numero magazine [France] December 2011. Karlie is an American model. Karlie Kloss is ranked third on the Leading 50 Models Women List by models.com. Vogue Paris announced her among the best 30 models of the 2000s. When Karlie Kloss was 13, she was identified at a fashion show in St. Louis. She was motivated and inspired to model by one of her teachers in Webster Groves High School.