Jillian Michaels Jillian Michaels

Jillian Michaels of The Biggest Loser is being sued for alleged false advertising for a diet supplement, The Associated Press reports.

A California woman, Christie Christensen, is seeking class-action status for her case against the personal trainer after purchasing the product called Jillian Michaels Maximum Strength Calorie Control because of the trainer's endorsement.

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She claims the product has not lessened her appetite or helped her lose weight, and it seeking unspecified damages not expected to total more than $5 million.

Michaels' rep did not immediately respond to comment, while a rep for the NBC show — one of the network's few hits — refused to comment "because we're not involved with this product and it is not in any way associated with The Biggest Loser or used by the contestants on the show."