Model of the moment, Karlie Kloss is in high demand by all the top designers to star in their advertising campaigns. The 19-year-old model stars in the Spring 2012 Elie Saab campaign and looks absolutely stunning doing so. In the two images released last week, the model wears a burnt orange one shoulder gown with a long slit running up the thigh (Angelina Jolie come get your dress), showing off her chiseled physique. Karlie is definitely the next Gisele and is sure to be in more campaigns this spring.