50. Keri Hilson
It’s hard to believe anyone as drop-dead gorgeous as Keri Hilson got her start behind the scenes, but that’s how she did it—writing hit songs for artists like Mary J. Blige, the Pussycat Dolls and Britney Spears, first as part of the Clutch collective and then on her own. After turning heads with her 2009 video “Knock You Down,” in which Kanye West and Ne-Yo battled for her affections, she blew minds late last year with “The Way You Love Me,” a video and song so hot, even the “clean” version is pretty NSFW. The cute little songwriter from Decatur, Ga., has blossomed into a full-blown freak—and we're liking it.