Justin Bieber was famously discovered at 13. Now at 18, he's a seasoned performer with a worldwide fan following (20 million-plus Twitter followers and counting) known as Beliebers. In June, his third studio album "Believe" debuted at number one in the U.S., the U.K., and his native Canada. The Biebs was digital host of the 2010 Madrid EMA, where he won Best Male and MTV Push EMAs, and he performed at the 2011 Belfast show, where he won three gongs—plus the inaugural MTV Voices award honouring his humanitarian work.