By Michael Roddy BERLIN (Reuters) – The gowns almost steal the show in the new Disney live-action version of “Cinderella”, actresses Lily James and Helena Bonham-Carter said on Friday at the film’s world premiere, but neither would recommend their dresses for street wear. James, in the title role, wears a gorgeous blue confection by British designer Sandy Powell for the ball where she and the prince, played by Richard Madden, sweep each other off their feet — but the British actress said the ball gown and other outfits she wore were very constricting. “They kind of do pretty much all the acting sometimes for you,” she told journalists at the Berlin International Film Festival where Disney’s animated version of the fairytale also made its debut 65 years ago. “They’re so magical and you put them on and you suddenly stand different and you feel different and then it’s all part of that magic — but they were quite painful, they fit so tight.” Bonham-Carter, who plays the loopy fairy godmother, electrifies the screen in a silver-white number that glows in the dark — courtesy of 4,000 LED lights powered by a 15-pound (7 kg) battery pack she said was attached to her posterior.