Victoria Justice: 21 Under 21 (2012)
Victoria Justice: 21 Under 21 (2012)

No. 21: Victoria Justice

Last Year's Rank: 10

Birthdate: February 19, 1993 (age 19)

Why She's Hot: The 19-year-old star of "Victorious" tumbles a bit in our 21 Under 21 list due to a relatively quiet recording year, but even as co-stars like Ariana Grande continue to see their profiles rise, Justice remains the breakout star of the Nickelodeon hit. The release of the show's latest soundtrack, "Victorious 2.0," coincided with the release of Justice's recent solo single, "Make It In America," and in August the teen star embarked on her first solo tour in support of the pop tune. With "Victorious" winding down, a new film vehicle "Fun Size" out in October and a solo album coming out thereafter, Justice looks poised to see a two-pronged career grow from her TV roots.

Video Below: Victoria Justice 's "Freak The Freak Out"

Next: Ross Lynch (Austin & Ally)