Jennifer Aniston is to become a mum of a mixed-race boy in a drama about racism in the segregated Deep South. The 40-year-old actress has signed on to make the film Holler [aka Mutt] about a white woman who returns to her hometown in Mississippi with her bi-racial teenage son in tow. Her son causes uproar in the Southern town when he wants to take his white girlfriend to the high-school prom - a segregated event. The teenager soon finds he is a catalyst for change for the prom, the school and the whole town. Set in modern-day America, Holler mirrors a practice that continues in Mississippi