A source told a leading daily, "Sameer mentioned he wanted to wish the actor on her birthday. As this particular episode is scheduled to air on Kareena's birthday, Amitabh Bachchan called up Kareena to make Sameer's wish come true. Bachchan himself wished Kareena and gave his blessings for Heroine. The chat between the two stars lasted a few minutes, with everyone on the set listening."
The source further added, "It seems that Kareena herself was initially supposed to go on KBC as a guest, but that didn't work out due to her hectic schedules. So when this opportunity to interact with a contestant on the show came her way, Kareena agreed to interact with her fan and with Big B."
Well, all is well that ends well!