Mumbai, July 24 (ANI): Bollywood diva Priyanka Chopra launched the trailer of her upcoming biopic drama film _Mary Kom_ on Wednesday along with director Sanjay Leela Bhansali and producer Omung Kumar in India_s showbiz capital, Mumbai. Priyanka, who will be seen playing the role of boxer Mary Kom in the film, came up on the stage donning a boxing robe. Calling it the hardest film of her career, she said she drew inspiration from Olympic boxing champion Kom herself. Meanwhile, producer of the film, Sanjay Leela Bhansali, said Mary Kom is an inspiration for all generations. The film is slated to release on 5th September 2014.