No. 4: Charice
Birthdate: May 10, 1992 (age 18)
Why She's Hot: Oprah and "Glee": they're two of TV's most powerful zeitgeist-definers, and both have fallen head over heels for Charice Pempengco. Credit the Queen of All Media for plucking the Filipina sensation from obscurity two years ago and introducing her to Celine Dion. The hype finally paid off this spring, when Charice debuted in the Billboard 200 top 10 with her first U.S. album. But its Fox's high school musical hit, on which she now plays a foreign exchange student with killer pipes to match Rachel Berry's, where Charice will show millions of Gleeks that she can out-sing the best of them.
Video Below: Charice performs "Pyramid" at Billboard HQ