Kevin Federline, Victoria Prince Do Vegas

A big celeb gossip story over the past couple of weeks has been Britney Spears' refusal to travel around the country on her Circus tour (kicking off March 3 in Louisiana) unless her kids, Sean Preston and Jayden James, could go with her.

Kevin Federline apparently has no such issues.

The forever-aspiring rapper got down over the weekend in his home away from home - a Las Vegas nightclub - and the only baby in sight, as confirmed by these pictures from TMZ, was Victoria Prince, his volleyball player girlfriend...

Victoria Prince looks smokin' ... K-Fed just smokes. [Photos: TMZ.com]

Hey, a man's got to party in Vegas sometimes, even if he has sole custody of his kids because their mom went bat$h!t a year ago. And Sean Preston and Jayden James can't always be around to spy for mommy on V-Prince. It's hard work.

From what we've read and heard, Victoria seems to be a good influence on Kevin. Or at least isn't making things any worse. Click to enlarge more pics of the hot couple ...