The film is based on Sarabjit Singh, an Indian national who was jailed in Pakistan on the charge of spying. Aishwarya plays the role of his sister Dalbir Kaur.
Omung says he wanted to cast an actress who could pull off being a twenty-year-old and a sixty-year-old with equal ease. "There are a very few actors who are in the middle range (in age) and mature enough to play a 22-year-old and a 60-year-old also. Young actors can be aged but it looks fake. I wanted that middle person," Omung told PTI.
"Nobody would think of Aishwarya in this role at all. Because people might say 'from which angle she looks like Dalbir'. I made Dalbir my way. All the mannerisms of Dalbir are there, the walk, the talk, but look-wise I've made Aishwarya not to look like Aishwarya," the director added.
This will be the second biopic Omung has made after his national-award winning 'Mary Kom'. "It just took 15 minutes for Aishwarya to say yes to the film. I know her for a long time, since her Miss India days and we have been friends. But I wanted to go to her with a solid role. She saw the full research I had done, I narrated one scene because I didn't have a script then, and she was on board," he said.
The film stars Randeep Hooda in the titular role. Omung was all praise for Aishwarya's professionalism. "When she is on set, she won't move from one place. If lighting is required, she will herself stand there...If it is a shot change, for continuity purpose she would retain her position for as long as one hour so that nothing should change in her style," he said.
The film is scheduled to release on May 20.
Last Updated 7:07 PM IST