I’m sure that’s a battle of wits…

from www.radaronline.com – Jessica Simpson made a guest appearance on HBO’s hit Entourage – but she wasn’t given any star treatment after she had to share a trailer with porn star Sasha Grey! RadarOnline.com has learned.

Both Grey and Simpson’s names were plastered on the same trailer at the set in Beverly Hills on Tuesday although the two women were not seen together during the shoot.

No doubt The Dukes Of Hazzard’s star’s nose would have been out of joint at having to share with the 22-year-old skin flick star whose screen credits include F*** Slaves and Throat: A Cautionary Tale.

Despite her somewhat unconventional rooming situation Simpson was in good form on the set where she shot a scene answering a door call from Jeremy Piven’s uber agent character Ari Gold .

A witness told RadarOnline.com: “Jessica looked great in a figure hugging outfit and green jacket she seemed to be having a really good time and enjoying herself.

“In between takes she and some of the cast happily posed for fans who wanted to take pictures of them and to get some autographs – the atmosphere was very relaxed throughout.”

In the new series Vinnie Chase (Adrian Grenier) falls for Grey after the pair meet in a bar and a relationship forms between them.

The plot twist was inspired by Charlie Sheen’s affair with famous X-rated actress Ginger Lynn in the 1990’s.

Gray has already gone mainstream after she starred in Steven Soderbergh’s The Girlfriend Experience and Entourage creator Doug Ellin’s is reportedly a big fan of her work.

Grey, who is from Sacramento, California, claims to have had her first sexual experience at 16 before deciding to move to Los Angeles to become an adult performer – she starred in her first movie aged 18 and has won several awards for her performances from the porn industry in recent years.