Director Shankar wants Aishwarya Rai Bachchan to get in shape before she starts shooting with the superstar in his sci-fi movie Robot.Although the actress had put on some weight for her role in Jodhaa Akbar, she is working hard on her figure now. Aishwarya has already started to loose weight, through gymming and dieting.Meanwhile, the release of Aishwarya's next film, Ram Gopal Varma directed Sarkar Raj, has been delayed because Amitabh Bachchan is not happy with the way the climax, featuring him and Abhishek Bachchan, was filmed and has asked Varma to re-shoot it.