Kevin Federline Being Called K-Fat Made His Lose Weight

I guess it took more than looks for Kevin Federline to pull himself together and lose some weight. It took a name.

"I looked pregnant," he tells Entertainment Tonight in an interview scheduled to air Thursday night. "It was upsetting. It's [usually] easy for me to brush stuff off of my shoulder. [But] when I see a pictures [of me] like that, and people are calling me 'K- Fat,' I had to do something about it."

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