Britney fears that the allegedly x-rated video she made with her husband Kevin Federline will be released on the market.

The pop princess and her husband could be facing an embarrassing exposure if someone reveals the saucy secret to all their fans.

Apparently, someone from Britney's group allegedly recorded the nasty video while Britney was pregnant with her first baby, Sean Preston. He is reportedly threatening to release it.

According to The Sun online, a source was quoted by US Weekly magazine as saying: "He has threatened to release raunchy footage of the two taken before Spears looked pregnant."

It seems that a copy of the original tape viewed by the couple's lawyers "elicited laughter and disgust".

But Kevin and Britney, whose Chaotic reality TV series is currently airing on digital channel E4, are desperately seeking to avoid the public release of their home-made video.

Colin Farrell has also found himself in the same situation earlier this year.
The Hollywood actor appealed to the Court to block the release of a tape he made with his ex-girlfriend, Playboy playmate Nicole Narain.

Limp Bizkit front man Fred Durst also sued 10 website operators this spring, for posting the rocker's 2003 homemade sex tape after it was stolen from his computer.