Singer Sonu Nigam at Amitabh Bachchan Big B 70th Birthday 2012 Celebration. Amisha Patel, Sharman Joshi, Bipasha Basu, Sonu Nigam , Manoj Bajpai , Rishi Kapoor , Neetu Kapoor , Alka Yagnik, Ashutosh Gowariker, Boman Irani at Amitabh Bachchan 2012 Birthday Celebration.
