| http://www.w3.org/ns/prov#value | - R&B star Rihanna, 24, earned an estimated $53 million to put her at No. 3, two places up from last year, followed by Lady Gaga, 26, who slipped from No. 1 in 2011 to fourth place with $52 million.Katy Perry, 28, the only musician other than Michael Jackson to produce five No. 1 hit singles from one album, rounded out the top five with about $45 million in earnings.I think people love the comeback
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