There's a box office battle brewing in the Roberts household - Pretty Woman star Julia Roberts' new movie, Eat, Pray, Love, hits U.S. cinemas a week after brother Eric Roberts' new blockbuster The Expendables. Experts predict brother Eric's all-star action film will debut at the top of the box office and so his sister will have to topple him if she is to retain her crown as the queen of Hollywood. And, to add to the family drama, Julia's film is released on her mother's birthday!