As the cast member who receives the most attention and seemingly wants it the least, Kristen Stewart, 22, has become a household name over the last four years. After being cast as Bella Swan, it didn't take her long to transfer her onscreen romance with Robert Pattinson (Edward Cullen) into real life -- and the duo quickly became tabloid fixtures. (Are they? Aren't they? OMG!) She's flexed her acting muscles in films such as The Runaways and Snow White and the Huntsman, proving she can play more than just a lovesick teenager. She's also kicked her fashion sense into high gear, helping her snag a Balenciaga perfume campaign. (Though she still rocks Converse -- off the red carpet.) Currently, the world is watching with baited breath as she attempts to rekindle her romance with Pattinson (whom she was caught cheating on this summer with her married Huntsman director, Rupert Sanders) before the final Twilight installment.