Hilary Erhard Duff is an American actress and singer. After working in local theater plays and television commercials in her childhood, Duff gained fame for playing the title role in the television series Lizzie McGuire. Duff subsequently ventured into feature films, with many successful movies to her credit which included, Cheaper by the Dozen (2003), The Lizzie McGuire Movie (2003), and Cheaper by the Dozen 2 (2005).
