Vidya Balan reportedly went unnoticed when director Sujoy Ghosh made the actress walk on the streets of Kolkata in a pregnant get-up before beginning the shoot for his upcoming film 'Kahaani'.
According to the grapevine, the 34-year-old actress mingled with the crowd so much that a co-passenger even got up to offer his seat to her in a tram.
In the movie, Balan plays a pregnant woman in search of her husband and the father of the child.
It is scheduled to release on March 9.
Spotted: Virat Kohli, Anushka Sharma and other celebs at Mumbai airport
Photos: Salman Khan's 'special friend' Iulia Vantur at a song launch
Photos: Hrithik Roshan, Anushka Sharma, other celebs dazzle at event
In Pictures: Sex scandals involving Indian politicians
Photos: Abhishek Bachchan and Farah Khan at Boman Irani's birthday bash