Britney Spears just landed in Sin City -- and guess who's there too? Kevin Federline, who's getting that "Dad of the Year" award, is there tonight.
Federleezy is set to host a party tonight at Prive nightclub in Planet Hollywood for all the unwed dads of the world and Britney just got to town to celebrate her own daddy-o Jamie's birthday.
Maybe she'll just happen to find her way to Prive. Not.
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