Justin Bieber Zac Efron FACES OF 2010

Justin & Zac featured in Interview's The Faces Of 2010: Admit it, just between the two of us: you love Justin Bieber, just like everyone else in America does. When Bieber put out his first full studio release, My World 2.0, in March, his fate was sealed: he was fated to become the teenybopper prince of 2010.

This was also the year Bieber decided to tell us his story: at the tender age of 16, he released a memoir, First Step 2 Forever, in October. September brought the news that Bieber accounts for three percent of all Twitter traffic. Not too bad for a kid who got his start at local singing contests.

Quotable in 2010: 'I haven't been in love yet. I've definitely loved girls. But it's kinda like puppy love. It's not the real thing, but that's what you think at the time.