Federline booed by fans during wrestling stunt

Britney Spears' husband Kevin Federline stepped into the ring with World Wrestling Entertainment star John Cena yesterday, in a stunt to promote his new album Playing With Fire.

The aspiring rapper made a surprise appearance during a taping of wresting show Monday Night Raw in Los Angeles.

Federline appeared before the sold-out crowd at the Staples Center and received a rounding chorus of boos from the fans.

Cena and Federline pretended to exchange words, which ended in Cena unleashing his signature move - the F-U slam on the former back-up dancer.

Rappers Three 6 Mafia, Jackass stars Steve-O and Chris Pontius, and pop stars Nick and Aaron Carter were in the crowd witnessing the action.

Federline's fight will be broadcast tonight in the US on the USA Network.