Actresses Natalie Portman and Scarlett Johansson passed time on the set of new movie THE OTHER BOLEYN GIRL by practicing their best hip-hop dance moves - in 16th-century costumes. Johansson, who plays Portman's sister in the historical drama, has described her 26-year-old co-star as a "good dancer" and claims she was the most likely to perform an impromptu routine on set. But Portman insists it was the Lost In Translation star who stole the limelight with her "booty dance". Johansson says, "Oh yeah, the costume booty dances! I have, like, this humongous costume with this long hair, and (Portman would) just be like, 'Yeah, yeah!' So wrong, but so right. "I have to tell you, though, in the costume, it's anything but sexy. It's just very wrong."