Hilary Erhard Duff is an American actress and singer. She began acting at a young age and rose to prominence as a teen idol, playing the title character in the television series Lizzie McGuire and its 2003 film adaptation. The success of the series led to roles in films such as Agent Cody Banks, Cheaper by the Dozen, and A Cinderella Story. In recent years, she has acted primarily in television projects and independent films.
Duff is noted for her musical career, which has produced the albums Santa Claus Lane, Metamorphosis, Hilary Duff, Dignity, and a forthcoming album scheduled for release in 2014. As of July 2014, she has sold more than 15 million records worldwide. As an entrepreneur, she has launched two fashion lines and released one perfume. Her first novel Elixir, co-written with Elise Allen, was a New York Times best seller and spawned the sequels Devoted and True. She has also involved herself with several philanthropic campaigns.
Duff married Mike Comrie in 2010; they separated in 2014. Together, they have one son. Duff's dating relationships with Aaron Carter and Joel Madden were sources of tabloid coverage in the 2000s.