Adapted from Philippa Gregory's novel, this period romp concerns the rivalry between Anne Boleyn and her sister Mary for Henry VIII's amorous attentions. Having no interest in politics, the tale operates only as historical romance. That would be fine, if the love triangle were firing on all cylinders. It isn't. While Scarlett Johansson shimmers as Mary, a vowel-chewing Natalie Portman makes us wonder why Henry took on the Pope for Anne.