Pop superstar Lady Gaga continues to set the entertainment world on fire.  After recently becoming the first celebrity on Twitter with 10 million followers, the singer was named the most powerful celebrity in show business Wednesday by Forbes Magazine.  Gaga supasses last year's number one on the list, Oprah Winfrey, who has topped the list four times. 

The list factors in a number of factors like income generated and influence, which largely depends on standing in social media, where Gaga is the undiputed queen.  In addition to having the most followers on Twitter, Gaga is also number on in Facebook fans with over 32 million, and was the first celebrity to reach a billion views on YouTube.

The youngest member of this year's Forbes power list, 17 year-old Justin Bieber, came in third in the rankings.  Rounding out the top ten were, in order, U2, Elton John, Tiger Woods, Taylor Swift, Bon Jovi, Simon Cowell and LeBron James.