Before beginning to shoot for his upcoming movie Kahaani, film director Sujoy Ghosh made Vidya Balan walk on the streets of Kolkata in a expecting woman get-up.

 walked on the roads of Kolkata and even climbed into a train. As Vidya performs the character of a expecting lady in Kahaani, she went around the roads in a pregnant woman getup. However, the actress went completely unseen.

Vidya Balan mingled with the public in such a way that a passenger even got up to present his seat to Vidya Balan in a train. Sujoy Ghosh added that they’re lucky that no one identified Vidya or else she’d have been mobbed!