Teen Takeover! The Year's Hottest (and Youngest) Stars

Miley! Taylor! Selena! See the crop of under-20 celebs who rocked 2008. By Serena Kappes

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MIRANDA COSGROVE

Age: 15
She successfully followed up her role in the Drake & Josh movies with iCarly, the breakout Nickelodeon show where she plays accidental Web star Carly Shay. Now the actress is ready to show off her musical chops: After singing on the successful iCarly soundtrack album, which debuted at No. 28 on Billboard's 200 Albums chart, Cosgrove began work on her solo disc, due next year.