Oprah just got owned: Gaga named Forbes' Most Powerful

Lady Gaga's $90 million in earnings last year might not trump Oprah Winfrey's $290 million, but with her 10 million Twitter followers and 32 million Facebook fans, Gaga knocked the daytime queen down to the number two spot on the Forbes Celebrity 100 list.

Oprah, who is leaving daytime talk, is going out with a bang. She was just honored at the United Center by some of the biggest names in Hollywood, along with 13,000 fans. We doubt the Forbes list demotion is causing her to lose any sleep at night, but it's only the third time in three years that she hasn't dominated the list in first place.

Rounding out the third spot was none other than the Biebs. Justin Bieber pulled in $53 million last year, and as Forbes says, the 17-year-old "would still be paying his dues in small clubs and schools, but thanks to the Internet, he's a sensation. His first hit song, Baby, has been viewed 500 million times, a YouTube record."

Other honorable mentions:

• Bethenny Frankel: Number 42, thanks to the sale of Skinnygirl for a reported $120 million.
• Tiger Woods: Number 6, despite his recent withdrawal from the Players Championship.
• Leonardo DiCaprio: Number 15, up from the number 71 spot last year, courtesy of the success of Shutter Island and Inception.

In other Gaga news, she just released her fifth song from Born This Way, Marry the Night, on FarmVille. Add creativity to the reason she's topped the Forbes list this year and knocked Oprah down to number two.

Check out the entire Celebrity 100 list on Forbes >>