12 Celebrities Who Prove Little Sisters Are the Coolest

Older sibling: Lily Aldridge

Ruby Aldridge's coolness lies in her edgy career choices and quirky sense of style. While she and older sister Lily are both successful models, Lily's work has been decidedly more sexy and mainstream — she has posed for GQ, covered the Sports Illustrated Swimsuit Issue, and is currently a Victoria's Secret Angel. Ruby, 23, took a different route with her work, becoming the face of brands like Marc by Marc Jacobs and Valentino and walking over 200 fashion shows to date for designers like Alexander Wang, Chloé, Proenza Schouler, and Stella McCartney.