Jessica Simpson simpsonfatjeans.jpgNot that long ago, Jessica Simpson was a sexy svelte size 0 and was a natural choice to star in an exercise video. Which is what she did for a company called "Speedfit." But apparently after seeing the less than stellar production values, Jess killed the tape's release.

Cut to now, where Simpson is more at home running for seconds at a chili cook-off in too-tight mom jeans than she is on a treadmill.

And according to PageSix, the producer of that never seen video (who sued Jess and Pop Joe for breach of contract) is mocking Tony Romo's girlfriend by releasing the video on YouTube.

"At least now she will get to feel how it is to be fat," the video producer Alex Astilean told PageSix.

Simpson is reportedly fighting back. Her attorneys are reportedly threatening to sue Astilean for defamation.

Sounds like this could turn into one big fat mess.

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