Bollywood megastar Amitabh Bachchan will be celebrating his 72nd birthday tomorrow and bahu Aishwarya Rai Bachchan has planned a surprise party for father-in-law.  Aish has been preparing for the birthday bash since two weeks and is making sure everything in the party is of Big B's taste. Unfortunately, Big B got to know about it from some source two days back but nevertheless the party is still very much on.

Aish booked a five star hotel in Mumbai and is looking after the arrangements for the past few days. Big B's daughter Shwetha Bachchan Nanda has flown from the national capital to be with her dad while Abishek Bachchan will miss this event as he is busy promoting his upcoming movie 'Happy New Year' which is gearing up for release this Diwali.

(AW: Vamshi)