See which stars transformed themselves – Jessica Simpson! Jennie Garth! – with a whole new look and attitude
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Updated: Thursday Dec 27, 2012 | 06:00 AM EST
By: Kiran Hefa
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Along with a new man, Clarkson got a new look in 2012. "I do cardio. I run. I strength-train using my own body weight," she told Redbook, adding, "[I try] to be healthy and happy."
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