Watch: Amitabh Bachchan’s stunning transformation into Mirza for ‘Gulabo Sitabo’ decoded in this BTS video

Shoojit Sircar's quirky dramedy Gulabo Sitabo has already got the country buzzing with its charmingly funny trailer and hilarious battle of wits between legendary thespian Amitabh Bachchan and Ayushmann Khurrana,.....