She may not have been born this way, but Lady Gaga  was pop's top-earning woman in 2011.
According to Forbes , Lady Gaga earned $90 million from album sales, touring and endorsements -- double the estimated earnings of Taylor Swift  and Katy Perry , who made $45 million and $44 million, respectively. In Gaga context, that's over $5 for each of the pop provocateur's nearly 17 million Twitter followers, or $2 a piece for her Facebook little monsters.
The numbers reflect earnings between May 2010 and 2011.
That calendar means Adele , who notched $18 million and ninth place with only a few months of record-keeping for her chart-ruling "21," may be tough competition for Mother Monster in 2012.
Rounding out the top 10 list was Beyonce  ($35 million), Rihanna  ($29 million), Pink  ($22 million), Carrie Underwood  ($20 million), Celine Dion  ($19 million) and Britney Spears , who tied with Alicia Keys  at $10 million for the No. 10 spot.
Overall, U2  was Forbes' top act in music, with the band notching $195 million.
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