The baby girl was born to Bachchan 'bahu' Aishwarya Rai on November 16 and speculation regarding her name began immediately.
After being referred to as Beti B for over four months, it was reported that the new member in the Bachchan family has been named Aaradhya.
Now the 69-year-old actor has finally confirmed that the name is indeed so.
A fan of Big B on micro-blogging site Twitter wanted to know the name of his grand-daughter.
"Want to see your lovely grand daughter... Would really appreciate your reply with her name. Would love to know that. Thankyou," he wrote.
In reply, Bachchan tweeted, "Her name is Aaradhya".