Britney Spears and Kevin Federline sex tape

Britney Spears and Kevin Federline reportedly fear a steamy home sex video is about to be made public. A member of the singer's entourage is believed to have copied one of the couple's personal video tapes - allegedly recorded while Britney was still expecting baby son Sean Preston - and is threatening to release it.

A source told America's Us Weekly magazine: "He has threatened to release raunchy footage of the two taken before Spears looked pregnant."

During her pregnancy, Britney confessed her sex life was the best it had ever been. The sexy singer insisted her bedroom romps with husband Kevin had been red hot since she conceived.

She confessed at the time: "I think it's the best. Sex is crazy good."Britney also stunned viewers on her reality TV show, Chaotic, after she was shown begging Kevin for sex.

The blonde babe, who was not married to former dancer Kevin when the footage was shot, brands the couple's bedroom antics "so good" before begging her 26-year-old lover to let her take the day off from her Onyx hotel tour last year "to just fuck all day."

The Toxic singer then turned her attention to the sex lives of her staff and crew - quizzing them about their favourite sexual positions.