The final official one sheet for Jennifer's Body, which features Megan Fox has been released. The film tells the story of a cheerleader who is possessed by a demon and starts feeding off the boys in a Minnesota farming town. Her "plain Jane" best friend must kill her, then escape from a correctional facility to go after the Satan-worshiping rock band responsible for the transformation. Fox will release the film in theaters on September 18th. Click on the teaser image below to see the full-blown image.