4. Taylor Swift
Still coasting on the success of 2010's massive "Speak Now," Swift added a few more Grammys to her mantel in February, and followed that with her second consecutive Entertainer of the Year Award from the Academy of Country Music. She'll look to start the hysteria all over again in October with the release of her yet-untitled fourth album.—Jeff Royer
(Photo: Isaac Brekken, AP Images)
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