"I am training for it at the moment and it will take me that much time to come into shape. We would start shooting for the film from June," Priyanka told reporters here at an event.
"Every part of my body hurts. Now I know how Mary Kom trains herself everyday," she added.
The biopic will be directed by Omung Kumar Bhandula, and produced by Sanjay Leela Bhansali.