This 23-year-old's tongue-in-cheek lyrics are what probably got the likes of Perez Hilton to call her "one of the breakout stars of the summer." While the daughter of two pastors was brought up singing gospel, Katy credits Queen with inspiring her own musical pursuits. Perry worked with a slew of top-notch pop producers to create her debut album, including Glen Ballard, Max Martin and Butch Walker. The result is an explosion of groovy beats and tart lyrics that take a concentrated effort to forget. In addition to her increasing modeling and acting gigs (she appeared on 'The Young and Restless'), Perry will be hitting the road this summer on the entirety of the Vans Warped Tour. (EMI)