India, Aug. 20 -- With his towering frame, expressive eyes and undeniable charisma, Amitabh Bachchan was one of Bollywood's biggest heartthrobs during his early years in the industry and continues to charm audiences decades later. Playback singer Sunidhi Chauhan is all set to grace Amitabh's quiz show, Kaun Banega Crorepati 18. In the latest promo, Sunidhi makes a sweet confession about her crush on Big B, leaving the veteran actor visibly amused.

The promo, shared on SonyLIV's official Instagram handle, shows Sunidhi Chauhan expressing her admiration for Amitabh. She says, "We have seen you in so many different avatars. You are Santa Claus to me. You were my first crush." Big B interrupts her and responds, "Aapko humpe crush tha, yeh ab...