They’re young, they’re on a white-hot winning streak, and most importantly, they’re

They’re young, they’re on a white-hot winning streak, and most importantly, they’re just getting started: These are www.Billboard.com’s “21 Under 21,” Charice and the Wonder Girls made the list. Here is what was said about them:

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.

Charice performs “Pyramid” at Billboard HQ

No. 16: Wonder Girls
Birthdates: Sun: August 12, 1989 (age 21); Yenny: May 26, 1989 (age 21); SoHee: June 27, 1992 (age 18); YuBin: October 4, 1988 (age 21); HyeLim: September 1, 1992 (age 18)
Why They’re Hot: A few of South Korea’s appropriately named Wonder Girls have already reached our legal drinking age. So what? Before the group’s SoHee and HyeLim celebrate their 21st b’days, the quintet — whose 2009 debut U.S. single “Nobody” made them the first Korean group to crack the Billboard Hot 100 — will have dropped their first English-language album (scheduled for release in Jan. 2011) and saturated our airwaves with their infectious pop harmonies. We’ll drink to that.