Lachey 'Cheated' On Simpson

Pop hunk Nick Lachey cheated on his wife Jessica Simpson with porn star Jessica Jaymes at a bachelor party, according to two American publications.

STAR magazine and NATIONAL ENQUIRER both claim Lachey frolicked with Jaymes at the 12 October (04) bash for his sound engineer friend Sean Sullivan, held at the Hollywood Hills home of C-NOTE RECORDS owner CODY LEIBEL.

While Jaymes admits Lachey watched her indulge in a lesbian sex show, she denies anything else happened.

Jaymes tells website PAGESIX.COM, "I was hired to perform at a bachelor party. And yes, Nick Lachey was there.

"I did a girl-on-girl show with another porn star, whose name I don't know. We brought over a lot of really cool vibrators and whipped cream and gear and stuff. There were toys used and naughty actions going on.

"The guys are allowed to put money on me, and Nick put some money on me and that's about it. I went home with my bodyguard later that night.

"Everything's been exaggerated. Everyone had a really good time. That's really all I'm allowed to say."

A spokesperson for Lachey has denied the allegations: "Nick was there, but he didn't do anything wrong. These claims are completely false."

The groom-to-be Sullivan wed JENNIFER MacFARLANE at Beverly Hills Presbyterian Church on 15 October (04), where Simpson played bridesmaid and Lachey's brother Drew was best man.