Four months after she gave her nod to the project, Vidya Balan is set to kick off the biopic on Shakuntala Devi in London today. Known to sink her teeth into the characters she essays, Balan used the interim months to familiarise herself with the miracle worker that was Devi, tapping as much into her mathematical skills that earned her the title of Human Computer as into her "wicked sense of humour" that made her much loved among her peers. Only weeks after a picture of the actor from the film's look test went viral, the makers have shared Balan's first look as Shakuntala Devi. Flaunting a short bob and a saree, she is a spitting image of the math wizard.