Britney Spears' ex-husband, Kevin Federline, who has sole custody of their two sons, will be celebrating the New Year's Eve with his new girlfriend Victoria Prince in Las Vegas. Hence, he was more than happy to send off his kids to Britney on December 31. A source, who is close to both Federline and Spears, said, that lately Kevin and Britney have much better relationship than they used to, and Kevin did not want to jeopardize it by mentioning Victoria. Full story