11. Christina Aguilera
After a terrible start to 2011 that included the flubbing of the National Anthem at the Super Bowl, a tumble on the stage at the Grammys, a plagiarism lawsuit, a silver screen flop with “Burlesque” and a painful public divorce, Christina Aguilera rose from the ashes like a phoenix with a four-octave range – thanks in large part to a new gig as judge and vocal coach on hit show “The Voice." Now with two successful seasons under her belt, the reinvigorated singer is prepping for the release of her seventh studio album later this year.—Jeff Royer
(Photo: Jason Merritt, Getty Images)
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