The highly anticipated film, "Factory Girl" with Sienna Miller and Hayden Christesnen, is making up for their bad critic reviews with a booty buzz.

Rumor has it that Miller and Christensen did not simulate their sex scenes and were actually performing the act.

Director George Hickenlooper would not confirm or deny it, saying "Sienna and Hayden grew close during filming. It was an emotional experience for all of us. We tried to portray it tastefully."

Miller has said of the scene "We wanted to make it realistic…we didn’t hold back because it is a real and gritty film. It wouldn’t fit the film if we had an unrealistic sex scene."

Miller plays Edie Sedwick the infamous muse of artist Andy Warhol.

Sounds a bit pornographic to me. Maybe Miller should ask Jenna Jameson if she has any openings for her next film.