Britney puts "fat housewife" K-Fed on a diet

Better known as "K-Fat" these days, the junk food loving father of Britney Spears's two sons has been put on an ex-wife-enforced diet.

He was a buff back-up dancer back in the day, but being a full-time dad to little Sean Preston and Jayden James (and having hundreds of thousands of dollars of child support money to spend on pizza) has taken its toll on Kevin Federline's waistline.

But now that Britney's back in shape for her new tour, she's on her ex-husband's case to trim down too… and she's not being subtle about it!

"Britney called him a fat housewife and he just laughed," a source tells National Enquirer. "She'll ask him, 'When is the baby due?'"

Kevin claims he's gained weight because he's happy and content, but Britney says he's just "fat and lazy".

"Britney insisted he go on a diet and stop showing their kids that it's ok to be fat and sloppy," the source added.

Apparently Kevin's agreed to cut back on the burgers and booze for the sake of his kids, but we're not sure how long the new eating regime will last, considering his attitude...

"He says he doesn't have to worry about his looks because women still love him," says a friend. Um, sorry Kev but it's your big bank account they love, not your big belly!

There's a whole legion of ex-spunky celeb blokes who are letting it all hang out these days. Let's take a closer look at this epidemic - check out our gallery of some former heartthrobs who have definitely packed it on lately!