Former tween star Hilary Duff is new to Gossip Girl, joining the cast in Season 3. Often spotted in the celebrity rags with hockey player boyfriend Mike Comie, she is best known for playing the title role in the Disney Channel television series Lizzie McGuire. She has also starred in the films Cheaper by the Dozen, The Lizzie McGuire Movie (yes, the Lizzie franchise was popular), and A Cinderella Story. Multitalented, Hilary has recorded three platinum albums and launched clothing lines and two perfume collections. Will this busy star—who has also been linked to Joel Madden and Aaron Carter—stay on Gossip Girl for long?