06/15/2012 11:38 am ET

Lindsay Lohan Concerned About Nudity And Graphic Sex Scenes In 'The Canyons': REPORT

Despite Bret Easton Ellis' enthusiastic casting announcement on Tuesday, Lindsay Lohan has yet to officially sign on to the controversial author's new film "The Canyons."

RadarOnline reports that Lohan has concerns about the extensive nudity and graphic sex scenes required for the role of Tara, a former model and girlfriend to Christian, a trust fund brat who enjoys filming his threesomes with various conquests, who will be played by porn star James Deen.

"The Canyons" is a contemporary thriller that documents "five twenty-somethings' quest for power, love, sex and success in 2012 Hollywood," and will be directed by Paul Schrader, who wrote classic movies such as "Taxi Driver" and "Raging Bull."

Though Lohan was cast in the role, is a fan of Ellis' writing and is eager to work with Schrader, a source tells RadarOnline that both she and her team are concerned about the nudity involved.

"Lindsay would be required to do full frontal nudity, and the sex scenes are very, very graphic," a source close to the actress told the website. "Yes, Lindsay has posed nude for Playboy, but doing it in a movie is completely different. Lindsay needs to make sure that she is comfortable with it, and that this is something she can handle as an artist."

Despite her concerns, the source says it's expected that Lohan will sign the contract within the next two weeks, as filming is scheduled to start on July 9.

Lindsay Lohan