Lady Gaga Tops Celebrity 100 List

The men and women on Forbes' annual Celebrity 100 list--the most powerful people in the entertainment business this year--earned $4.5 billion over the last 12 months by starring in films, playing basketball, walking the catwalk and more. But they also rose to the top by garnering influence.

According to a story by Dorothy Pomerantz at forbes.com, these days that means mastering social media. Lady Gaga topples Oprah Winfrey from her No.1 spot on our list, which she's given up for only the third time in seven years. Gaga is there not just because of the $90 million she earned with a monster tour, but also because of her 32 million Facebook fans and 10 million Twitter followers--aka Little Monsters--who helped move 1 million digital downloads of her recent single "Born This Way" in only five days. They're also happy to buy the MAC makeup, Monster headphones and Virgin Mobile phones she features in her videos.

Oprah doesn't fall far though. The daytime talk maven, who earned $290 million last year, comes in second. Winfrey's earnings sank $25 million partially due to a reduced payday at SiriusXM. She still earns big from her syndicated show and from the stars she's spawned, including Dr. Phil (No. 18) Rachael Ray and Dr. Oz. Winfrey's earning power will take a bigger hit next year, when her syndicated show ends and she concentrates all her efforts on the struggling OWN network.

#3 Justin Bieber
#4 U2
#5 Elton John

#23 Rush Limbaugh
#24 Ryan Seacrest
#26 Howard Stern
#30 Glenn Beck

See the entire list here.

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