Actress Deepika Padukone who has been busy shooting for her upcoming film ' Bajirao Mastani ' also starring Ranveer Singh and Priyanka Chopra , claims it to be the most involving film. The actress opened up about working on the film which is a dream project of film maker Sanjay Leela Bhansali in a recent interaction with the media.

The dimpled beauty claimed that the film is definitely the toughest of her career. The actress stated that the film has been physically, mentally and emotionally draining for her. The nature of the film and the director is very demanding, she added.

On working with Bhansali, Deepika stated that, he is never happy with what he sees. He is very clear about what he wants from his actors and team. So, he pushes you and helps you discover something within yourself that you didn't know existed. The actress also calls the film maker a task master adding that it has been the most difficult experience, but in the end she feels it is all worth it.

'Bajiro Mastani' is all set to hit the silver screens on December 18.