Dia Mirza has been added to the cast of Rajkumar Hirani's biopic on Sanjay Dutt. The actress posted a snapshot from the set with co-actors Ranbir Kapoor and Vicky Kaushal besides writer Abhijat Joshi. Dia, who was part of Hirani's 'Lage Raho Munna Bhai' (2006), is close to the filmmaker.