Jessica Simpson appears in sex tape?

Rumours have emerged that a sex tape starring Jessica Simpson will appear online.

According to the Daily Sport, the home movie, which features popstar and actress Simpson engaging in a number of sex acts with her ex-husband Nick Lachey, has been acquired by the same people who released Pamela Anderson and Tommy Lee's holiday sex video.

A source said: "Jessica is horrified her name and 'sex tape' are being mentioned in the same sentence. She's always been a girl of high morals and principles."

The tape will reportedly be distributed online unless Simpson pays an undisclosed fee to keep it out of the public domain.

Simpson and Lachey, who starred in the MTV reality show Newlyweds, divorced in 2006.

Last month, a sex tape starring Mini-Me actor Verne Troyer and a former girlfriend leaked on the internet.