She continued to have success in music, with her albums Hilary Duff (2004) and Most Wanted (2005) achieving Platinum status in the United States.
Following the release of her fourth studio album, Dignity (2007), Duff released a greatest hits album and parted ways with Hollywood Records.
Duff began to expand her career into theatrical films, with leading roles in projects such as Agent Cody Banks (2003), Cheaper by the Dozen (2003), A Cinderella Story (2004), and Cheaper by the Dozen 2 (2005).
Duff has sold an estimated 15 million records since her debut in 2002.
Hilary was raised between Houston and San Antonio, the locations of her father's convenience stores.
The series proved to be a hit, leading to a film adaptation of the series to be released.
Duff began working on numerous projects with the Disney Channel, including the film Cadet Kelly (2002).