And the singer, who has previously hinted she"d like actress Scarlett Johansson to play her in a movie, is on the lookout for an actress with similar charms to hers. “I"m working on my life story. I"m not decided if it"s going to be a musical or a movie with music in it. I"ve not thought about who will play me - but we need someone little," the Daily Express quoted her as saying. “And if they don"t have enough up top we"ll have to give them a big old boob job," she added.