Despite spending most of Britney's money down his local Taco Bell and expanding to the size of a small gestating elephant, Kevin Federline was still flanked by frenzied females as he took his kids, fiance, nanny and burly minder (nope, you still look fat) on a day out at the Central Park zoo in New York...

But apparently Federline (pictured with his boys from marriage to Spears, Jayden James and Sean Preston) has got morbidly obese intentionally (celebrities eh?) for his reported reality TV show which will show him putting on weight and presumably see him losing it.

We think we'd rather watch Katie Price pissing on a pregnancy test, if it's all the same...

And we can't help but wonder what his 26-year-old fiance and former professional volleyball player Victoria Prince sees in him...

Meanwhile, Britney was looking in good shape and flashing her arse in a leotard in New York and proving she's still in good shape (even if KFed isn't) by touching her foot on her head (pic 10). Though we're not too keen on the view...