21 Under 21: Miranda Cosgrove
21 Under 21: Miranda Cosgrove

No. 14: Miranda Cosgrove

Birthdate: May 14, 1993 (age 17)

Why She's Hot: Miranda Cosgrove learned a lot from the "School of Rock" … and by that, we mean the 2003 Jack Black comedy where she made her film debut. After breaking out on Nickelodeon's "Drake & Josh" in 2004 and starring in the network's hit comedy "iCarly," Miranda Cosgrove crashed the top 10 of the Billboard 200 with her debut album 'Sparks Fly," which peaked at No. 8 last spring. While more music is sure to come, Cosgrove is currently cashing in on her "iCarly" success -- Nickelodeon reportedly gave the starlet a seven-figure deal last March.

Video Below: Miranda's "Kissin U"

Next: Chris Colfer

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