This is her first film with Bhansali, known for making hits like "Hum Dil De Chuke Sanam" and "Devdas". He also went behind the camera for "Saawariya" and "Guzaarish", but they failed to appeal to the audiences.
Now the director-producer is coming up with "Ram Leela" with Deepika and Ranveer Singh in the lead roles.
"It has not been easy, it has been really mentally, physically, and emotionally demanding film," said the 28-year-old, who spent over a year on the project, in an interview.
"The fact that he is a perfectionist, he doesn't let go of anything. He looks at things a certain way and it has to be more or less that way.
"He has a vision and everyone works towards that. So, it obviously has been a very tough journey, as exciting and challenging as it was, it has also been quite tough. So to see all of that come together, I did get a little emotional," she added.
Set in a rustic region of Gujarat, "Ram Leela" also stars Richa Chaddha, Gulshan Devaiah and Supriya Pathak. It will hit theatres Nov 29.