The film, that's being directed by Rajkumar Hirani, also stars Dia Mirza, Manisha Koirala, Paresh Rawal, Sonam Kapoor and Anushka Sharma.

Ranbir Kapoor, who's playing Bollywood star Sanjay Dutt in the upcoming biopic on the movie legend, looks to be taking his role seriously - with `looks` being the operative word.

Photos from the sets of the film were leaked recently that showed Ranbir sporting long locks, a throwback to Sanjay's look from his earlier days in the film industry. Ranbir is also reportedly watching lots of videos of Sanjay Dutt, including his films - 250 hours worth of videos, in total, to ensure he gets Sanjay's mannerisms right to prepare for the biopic.

The film, that's being directed by Rajkumar Hirani, also stars Dia Mirza, Manisha Koirala, Paresh Rawal, Sonam Kapoor and Anushka Sharma.