TIME21 Things You (Maybe) Didn't Know About Justin BieberTIMEJustin Bieber turns 21 years old today, but it seems like he's been around forever. But how well do you really know the Biebs? (If you're a responsible grownup, we're betting, not as well as you think you do.) Read these 21 facts about the Canadian pop ...Justin Bieber Turns 21: His Sexiest Looks EverHollywood LifeHappy Birthday, Justin Bieber: 5 Great (and Hilarious!) ImpressionsBillboardJustin Bieber Doesn't Need A 21st Birthday Because He's Been A Man For YearsMTV.comEntertainmentWise -Zee News -Toronto Sunall 71 news articles »