Demi Moore is the latest actress to join the cast of Sony's R-rated film, Rock That Body. The film is about a wild bachelorette weekend in Miami where five friends rent a beach house and let loose. The film will also star Scarlett Johansson, Kate McKinnon, Jillian Bell, Ilana Glazer and Zoe Kravitz. The film which is co-written by Broad City's Ilana Glazer, started filming last weekend. Lucia Aniello, who is also a writer on Broad City, is directing the film.