Mischa Barton

Although London-born Mischa Barton had bit parts in hit films like Notting Hill and The Sixth Sense it wasn't until Fox's hit teen drama The O.C. came along that she became a household name. After the show ended in 2006, Barton – whose character Marissa Cooper was killed off shortly before the series finale - has continued to work as a model, even becoming the spokesperson for SAFE (Skin Awareness For Everyone) Campaign in 2007, and works to promote the Keds footwear line. Barton has previously dated Brandon Davis and Cisco Adler.