We caught a glimpse of Vidya Balan who says she is confident and proud of being a part of Paa.

"It is unbelievable to play Amitabh Bachchan's mother. I very really fortunate because there have been many successful actresses who have played his mother but I can proudly say that I am the only one who has played mother to a 13-year-old Amitabh Bachchan," she smiled.