‘Biggest Loser’ Contestant Sued After Allegedly Gaining ‘Far Too Much Weight’

Lawsuit claims that Tara Costa got too big to promote fitness company

"Biggest Loser" alum Tara Costa could have a weighty legal situation on her hands.

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Costa, who appeared on NBC's "The Biggest Loser: Couples 2"  — and lost 155 pounds in the process — is being sued by a fitness company, which claims that Costa violated a business agreement with them.

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Among the gripes in the lawsuit, filed in U.S. District Court in Florida: That Costa "had gained far too much weight" to make personal appearances on behalf of the company.

FC Online Marketing, Inc. — which owns the website I Love Kickboxing — claims that the alleged weight gain ran contrary to a passage in the agreement that Costa "agrees to maintain her current level of fitness and conditioning" during the length of the agreement.

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The suit, which also names The Champion Funds, Inc., d/b/a the Inspire Change Foundation, levels other charges. The complaint also claims that FC Online Marketing agreed to pay the Foundation $45,000 for "likeness rights" to Costa — rights that, the suit alleges, were not the Foundation's to grant.

On top of everything else, the suit claims, Costa entered into an agreement with one of FC Online Marketing's competitors, in violation of the original agreement.

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The Inspire Change Foundation has not yet responded to TheWrap's request for comment.

The suit is seeking unspecified damages.

Pamela Chelin contributed to this report.