Hilary Erhard Duff is an American actress, businesswoman, singer, musician, producer and writer. Duff began his acting career at a young age and was soon seen as a teenage idol with a starring role in the Lizzie McGuire television series and the drama-based film The Lizzie McGuire Movie. She later appeared in several films, with leading roles in Cadet Kelly, Agent Cody Banks, Cheaper By the Dozen, A Cinderella Story and Cheaper by the Dozen 2. She later began appearing in indie films with more roles, such as a flamboyant pop star in War, Inc., a suicide and rebellious teenager in Theo Greta, and is The dramatic protagonist in The Haunting of Sharon is controversial. Tate. She has also produced several projects in which she starred, such as Theo Greta, Beauty and the Briefcase and The Haunting of Sharon Tate.

From 2001 to 2004, she starred as the cheerful Lizzie McGuire on the Disney Channel series Lizzie McGuire. She also starred in The Lizzie McGuire Movie, A Cinderella Story, and Cheaper by the Dozen, among other films.