AGE 20: Justin Bieber
20岁：贾斯汀·比伯
Grammy Award-winning musical artist
格莱美获奖音乐人
What makes him powerful: Over the past year, the Bieb's reputation has taken quite the tumble, thanks to a string of fights with paparazzi, pot-smoking allegations, and a DUI arrest. Still, Bieber has a net worth of $58 million and is the second-most-popular celebrity on Twitter, with more than 50 million followers.
权势所在：过去的一年，比伯因为与狗仔队发生冲突、被控吸食大麻以及酒驾被逮捕，他的名声已经急速下滑。虽然如此，比伯的身价仍高达5800万美元，他还是推特上排名第二最受欢迎的名人，拥有5000万的粉丝。