Hilary Erhard Duff is an American actress, author, entrepreneur and singer. Born and raised in Houston, Texas, Duff appeared in local theatre productions and television commercials before coming to prominence in the title role of Disney Channel's teen comedy Lizzie McGuire. Established as a teen idol, Duff reprised that role in The Lizzie McGuire Movie and subsequently ventured into motion pictures. Her early films Agent Cody Banks , Cheaper by the Dozen , A Cinderella Story and Cheaper by the Dozen 2 are among the biggest commercial successes of her career. Most recently, she has performed in independent films and television dramas like Gossip Girl.