Right on the heels of reports of a Britney Spears/Shannon Funk freakfest in a hotel swimming pool, Kevin Federline has tracked down a European brunette he claims banged his ex-wife, with his permission, following a naughty night out at a gay bar in Copenhagen in 2004. K-Fed has commissioned the sultry lesbian to testify in his bid for custody of Brit’s boys in Los Angeles Superior Court on September 17th.

Brit was partying with Kevin at Pan Nightclub when she became attracted to a European dancer:

“They seemed really close. Britney was on Kevin’s knee and this girl was sitting next to them. and Britney were giggling all the time. At one point Britney stood up and danced round the table,” a snitch tells NOW.

The ladies later jumped in a taxi and jetted back to Brit’s Marriot Hotel suite-with then hubby K-Fed following behind.

“Britney was all over the brunette in the cab. They went upstairs together at the hotel.” Federline realised that night was central to his case against Britney and sent private detectives to scour Europe looking for the girl.”