Mischa Barton Pictures

After roles in shows like "All My Children" and "Once and Again," Mischa Barton's big breakthrough was on the hit series "The O.C." Her character, Marissa Cooper, was best friends with Rachel Bilson's character, Summer. Mischa Barton has dated Brandon Davis, Cisco Adler and Taylor Locke. Check out Mischa Barton's latest fashion photos. Rate Mischa Barton's photos, add them to your lookbook, email them to your friends, and post them to Facebook, Twitter and MySpace.