(digitalspy.co.uk) - Natalie Portman has admitted she wants to grab her co-star Scarlett Johansson's breasts, reports The Sun."Seriously, I would really want to grab Scarlett's breasts," the actress is quoted as saying. "She's got beautiful ones."Johansson plays Mary Boleyn, sister to Portman's Anne, in next month's The Other Boleyn Girl. Both battle to win the affections of Eric Bana's Henry VIII.Portman recently described her character in the film as "a scheming bitch" .The Other Boleyn Girl, based on Philippa Gregory's bestselling book, is released in the UK on March 7.