Band Or Solo Artist?: Solo
Genre: Pop, Rock
Greatest Hit: "Party in the U.S.A." (2009)

When she shed her Hannah Montana image for a more risqué, bong-hitting persona, everyone questioned whether or not she'd succeed after child stardom. However, these days, she's working on her fourth studio album with Pharrell Williams and Hit-Boy, and she's engaged to Liam Hemsworth, so we'd say she's doing pretty well. Plus, all those tattoos and her short platinum blonde bob just make her more of a badass.