Just one year ago, Justin Bieber didn't even make the cut on Forbes magazine's "World's Most Powerful Celebrities" list — he was on their stars to watch list. Now this year, the singer has made his powerful list debut… at number three! With thanks to 500 million views on YouTube, a movie that grossed more than $100 million, and a successful tour, Justin proved this year that he has staying power. (Though J-14 already knew that!)

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Lady Gaga topped the list, jumping four spots from last year, and Oprah, who is usually number one, came in at number two. "this is crazy…congrats to Lady Gaga for topping the list. well deserved." Justin Tweeted.

Other stars that made the list include: Katy Perry, Usher, Taylor Swift, Simon Cowell, Charlie Sheen, Elton John, and Will Smith.

Who do you think is the most powerful celebrity in the world?

Photo: Courtesy of Paramount