Hilary Duff August 24, 2007

Arguably the only teen pop star with the potential to rival or surpass the popularity of Britney Spears -- albeit with a very different approach -- Hilary Duff made a name for herself on the enormously successful Disney Channel/ABC Kids show 'Lizzie McGuire,' which she parlayed into careers as a pop singer and film actress. The Click Five are described as new school power pop.