Mumbai -- After six-month of speculations, the cat is finally out of the bag. Megastar Amitabh Bachchan has disclosed the name of his new-born granddaughter on Twitter. Her name is Aaradhya, Bachchan tweeted. The star wrote this in reply to a fans query about Abhishek and Aishwaryas daughter who was born on November 16. Though, various names were doing rounds before, including Aaradhya, but it is for the first time a member of the Bachchan family has confirmed this officially. Till now Big B has been using the term little one to refer to his granddaughter.