Calabasas Kevin Federline

On Saturday Kevin Federline grabbed a sandwich at Subway in Calabasas, and Britney Spears' ex-hubby looks like he's slimmed down quite a bit over the last few months. Who knows, perhaps the company will hire K-Fed as a spokesperson sometime in the near future? Well, maybe not, but at least he's eating healthy and staying fit!

Kevin and wife Victoria Prince confirmed last month that they are expecting their second child together (though this will be his sixth -- he has two with Brit Brit and two with his other ex, Shar Jackson), so between hitting the gym, eating well and chasing after all his children, we can't imagine the former backup dancer won't be able keep the weight off!