Selena Gomez: 21 Under 21 (2012)

Selena Gomez: 21 Under 21 (2012)

No. 6: Selena Gomez

Last Year's Rank: 3

Birthdate: July 22, 1992 (age 20)

Why She's Hot: One year after scoring another huge album ("When the Sun Goes Down") and a pair of hit singles ("Who Says" and "Love You Like a Love Song"), Selena Gomez has broadened her appeal while taking a break from recording. This spring, she launched a self-titled fragrance and appeared in sultry ads supporting it. A continued focus on film -- her voice will be heard in the animated film "Hotel Transylvania," and next year Gomez will appear in the crime drama "Getaway"-- has served as a logical next step for the former "Wizards of Waverly Place" star. And of course, more hand-holding with Justin Bieber has led to countless tabloid placements. Selena Gomez and the Scene will hopefully be back soon, but in the meantime, the 20-year-old starlet is still leaving her imprint on pop culture.

Video Below: Selena Gomez's "Who Says"

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