Mischa Barton: Style Setter

Peek at some of the O.C. star's most fashionable looks, selected by PEOPLE style expert Susan Kaufman. By Serena Kappes

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Barton shows off her great gams with a chiffon handkerchief dress at the Teen Choice Awards (in August). Her short, belted frock is a "crazier print than she normally wears," says Kaufman. "She probably intentionally wore something kind of funky and fun and appropriate for the event. It's unusual for someone as young as she is to have such confidence in her choices."