As the girl we all really, really want to hang out with, supermodel in the making Cara Delevingne has been one busy lady. After being announced as Model of the Year at last year's British Fashion Awards, Cara has walked in so many international shows that we have no idea how she keeps up! The younger sister of blonde bombshell Poppy, she oozes that tough-girl androgyny that only very select women can actually pull-off. Her brows are nothing short of amazing, and those cheekbones? Someone pass us a seat! To celebrate her 21st birthday this week, we're taking a look back at her best moments in front of the camera.