Jesse McCartney is Back in Black 2/8/2008 1:52 PM PT 20-year-old heartthrob Jesse McCartney debuted a new darker do at a Grammys event in Los Angeles. Why God why?! Without his hair, he has nothing! Oh wait, he's a singer, right? See Also Exclusive: Underage Stars Party Illegally at Clubs Share on Facebook Share on X Jesse McCartney Beauty