Sienna Miller has denied she romped for real on the set of Factory Girl.

In the film she plays '60s artist and Andy Warhol muse, Edie Sedgwick. However despite glowing reviews, she hit the headlines earlier this year when a mystery 'set insider' announced her's and co-star Hayden Christensen's sex scenes looked so realistic because they'd actually had DONE it!

Not so, says Sienna.

"There's another name for actors that do that kind of film. Im not one of them," she said firmly at the film's press junket yesterday (March 12).

However she says she wasn't upset by the rumours.

"I take it as a compliment. I dont want to do a sex scene that doesnt look real, because thats my job," she said. "But Im not about to have sex in front of 20 people with the cameraman and a man with a mic there and George (Hickenlooper, the director) sniggering."

She also slammed suggestions that Edie was a '60s version of today's IT Girls.

"People have tried to compare Edie to Paris Hilton. I really see something really different," she said. "She was really an artist in her own right as well, (a) performance artist, this creator of inspiration."

Ouch!

'SLJ'