Bollywood actor Anushka Sharma attended the trailer launch of her upcoming film ‘Zero’ with Shahrukh Khan and Katrina Kaif in Mumbai. At the launch event she talked about her role which she said was very challenging but that was also the reason that she accepted the offer. Her character in the film suffers from cerebral palsy. She also mentioned that unlike other films, she was very nervous on the sets of ‘Zero’. Directed by Anand L. Rai the film is set to hit the theaters this December.