Was K-Fed’s Partying The Last Straw For Britney?

Kevin Federline’s non-stop party boy ways may have been Britney Spears’ biggest problem with her now estranged hubby, People magazine’s Jess Cagle tells ‘Extra’. “After she had her second baby, the baby was only three weeks old and then Kevin was off partying in Vegas,” Cagle said. “It did not sit well with her.”