Khan, who is currently shooting for Dhoom: 3 in Chicago with Abhishek Bachchan, will travel back to Mumbai with Abhishek on the morning of October 10, ahead of the two-day celebrations.
A source told The Times of India : "Aamir has been drawing closer to the Bachchan family for the last few years. Though Abhishek is very close to Shah Rukh and considers him the elder brother he never had, the junior Bachchan has become very close to Aamir during the Dhoom: 3 schedule in Chicago.
"Aamir has not only been very friendly with Abhishek, his wife and little son have also warmed up to Abhishek's wife Aishwarya and his baby daughter Aaradhya. There is major bonding happening out there."
Abhishek, who reprises his role from the original film as Police Officer Jai Dixit, and Uday Chopra, who plays his sidekick Ali, were said to be excited at the prospect of working with Khan in the third instalment of the Dhoom franchise.
Khan has been cast opposite Katrina Kaif and will portray a negative character in the film.
Amitabh's birthday festivities will comprise a formal dinner on October 10, with invited guests from the film fraternity, political leaders and society folk in attendance.