Before beginning to shoot for his forthcoming film Kahaani, director Sujoy Ghosh made Vidya Balan (the female lead in Kahaani) walk on the streets of Kolkata in a pregnant get-up.

Vidya Balan walked on the streets of Kolkata and even climbed into a tram. As Vidya plays the role of a pregnant woman in Kahaani, she went around the streets in a pregnant-getup. However, the actress went absolutely unnoticed.

Vidya Balan mingled with the crowd in such a way that a passenger even got up to offer his seat to Vidya Balan in a tram. Sujoy Ghosh added that they were lucky that nobody recognised Vidya or else she would have been mobbed!