Fat Kevin Federline, Shar Jackson Sign on For Celebrity Fit Club

Kevin Federline is famous only because he used to be married to Britney Spears and helped spawn her two sons. Now he is best known for being really freaking fat.

Fat doesn't really do it justice. We are talking obese here, people.

Well, that may not last. Having stuffed himself silly for the past nine months, K-Fed is now going to get paid to go on VH1's Celebrity Fit Club and lose some weight.

Is this a great country or what?

A rep for the network confirms that K-(over)-Fed is joining the cast of the show's new season. Also appearing? Kevin Federline's ex and baby mama, Shar Jackson!

In addition to Britney Spears' kids Sean Preston and Jayden James Federline, Kevin also impregnated Shar twice, only to dump her for Spears. A classy move.

LARGE AND IN CHARGE: Did you really need to take the leftovers, K-Fed? We know you aren't planning on giving 'em to the dog. [Photo: PacificCoastNewsOnline.com]

Despite being lambasted in the press for putting on absolutely massive amounts of weight, Kevin seems happy these days with girlfriend Victoria Prince.

She's in slightly better shape than he.