There's no two ways about it — she's probably the coolest dresser around these days. And that's because she has a look that's at once casual but not, weird but normal, cool but elegant, naked but covered, and can absolutely pull off getting really dressed up when need be (i.e. her Grammys Alaia dress). She avoids the classic celebrity pitfalls of dressing like a pageant queen, fearing the worst dressed list more than death itself and thus never taking risks, or being photographed like a post-yoga slob. When she gets ridiculous, it's not in a Justin Bieber harem pants kind of way — it's always in a way that makes you go, Hm, only she would look cool in that. Versus: Ugh, douche outfit. Her River Island line embodies this very spirit.