Jennifer's body, the horror film starring Megan Fox as a sexy high school student that is possessed by an evil spirit, has gotten mixed reviews from film critics.

The site which compiles movie reviews, rated the film -written by Juno's Diablo Cody - as rotten by Friday, with 40 percent of positive critics.

Director Karyn Kusama is torn between duty to female empowerment and slasher convention. But Fox shows a comic flair that Transformers never investigated, Peter Travers, a critic from Rolling Stone noted.

The movie has the darkness of Heathers, the edginess of Mean Girls and the absurd gore of Little Shop of Horrors. In other words, it's tailor-made for screenings at midnight and slumber parties, according to EOnline.

Jennifer's Body also stars Amanda Seyfried and Johny Simmons. It is rated R and is set for release Friday, September 18.

Watch the trailer below and read the synopsis after the video:

Jennifer's Body synopsis according to Fox:

A sexy horror film with a wicked sense of humor, JENNIFER'S BODY is about small town high school student Jennifer (Megan Fox), who is possessed by a hungry demon. She transitions from being high school evil - gorgeous (and doesn't she know it), stuck up and ultra-attitudinal - to the real deal: evil/evil. The glittering beauty becomes a pale and sickly creature jonesing for a meaty snack, and guys who never stood a chance with the heartless babe, take on new luster in the light of Jennifer's insatiable appetite. Meanwhile, Jennifer's lifelong best friend Needy (Amanda Seyfried), long relegated to living in Jennifer's shadow, must step-up to protect the town's young men, including her nerdy boyfriend Chip