It seems that hotel heiress Paris Hilton is once again involved in a sex tape controversy with a Playboy pin-up alleging that she has made a lesbian sex tape with the socialite.

Paris made the "horniest videotape of all time" with Playboy beauty Nicole Lenz.

The model claims she romped with Paris after checking into a 500 pounds-a-night suite at the Bellagio Hotel, in Las Vegas.

"The moment we were in the room Paris had only one thing on her mind - sex. We lied down on a king size bed and took it in turns to play with each other. It wasn't long before we were naked and rolling around together," Lenz was quoted in Britain's News of the World newspaper as saying.

Lenz also claims she and Paris pleasured each other with sex toys.

"We just pleasured each other for hours, recording it all. Paris had brought all manner of sex toys - to make sure we didn't miss out on anything simply because there was no man in bed with us!" she added.