Sources say that Priyanka is working very hard to develop abdominal muscles to portray Mary to the hilt.
A source says, "She is taking her fitness to another level. Priyanka is charged up for her role. If she hasn't found time in the day to work out, she hits the gym even in the middle of the night."
Apparently it was Priyanka who convinced the makers about her look and currently is huffing and puffing away at the gym.