Fit-spiration! See the selfies Jessica Alba, Carrie Underwood, Karlie Kloss and more buff stars snap between reps
Credit: Courtesy Usher
Updated: Friday Dec 13, 2013 | 11:05 AM EST
By: Alison Schwartz & Brooke Showell
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See the inspiring stories of how these slim-down superstars each dropped 100-plus pounds
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"Getting ready," Usher, in boxing gear, wrote – and those are some fighting words!
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