Kevin Federline joins the cast of Celebrity Fit Club

Kevin Federline, Britney Spears' now beefed up ex husband and baby daddy, has signed on to join the cast of Celebrity Fit Club. This is great news for one main reason: it seems to indicate that the solo reality show deal that K-Fed was rumored to be working on is a no-go and he'll have to join a cast of other z-list celebrities bickering and competing to lose weight. It won't be only about K-Fed and his well-paid quest to drop the pounds.

Kevin Federline is about to slim down.

The father of four, who was married to Britney Spears, is joining the cast of Celebrity Fit Club, a rep for VH1 confirms to PEOPLE

Also appearing on the seventh season of the show will be Federline's ex-girlfriend (and the mother of two of his kids) Shar Jackson, according to a source.

Federline, a former backup dancer, has been lambasted in the press for putting on weight since his split from Spears three years ago.

The newest season of Celebrity Fit Club premieres on VH1 Feb. 14, 2010.

[From People]

On Monday we heard from Federline's ex girlfriend and the mother of his two oldest kids, Shar Jackson. Shar told US Magazine that K-well-Fed 'doesn't care' that he's gained weight, and that 'The beautiful thing about him is that he could care less [that he's much bigger now]' As JayBird pointed out, the increased girth has only afforded Federline more opportunities to earn money apart from the over $20k a month he gets for watching two of his kids half time. I wonder if that rumored $2.5 million diet pill endorsement deal has also fallen through. Surely VH1 has a clause in their 'Fit Club' contract that participants can't endorse outside diet and fitness products. Soon we'll get to see if K-Fed's ego is just as bloated as it was before his divorce or if his bravado has decreased in inverse proportion to his size.

Kevin Federline, Victoria Prince and Kevin's children with Shar Jackson are shown out in Calabasas, CA on 8/15/09. Credit: Fame Pictures