Shahid Kapoor and Sonam Kapoor, who will appear as special guests on the fifth season of 'Kaun Banega Crorepati' hosted by Amitabh Bachchan, had a superb time on the sets. And the stars got tweeting about it too!"Finished kbc for MAUSAM with the iconic Amitabh Bachchan and the beautiful Sonam Kapoor .Super fun. Thank u sir for being so gracious," Shahid posted on his Twitter page.Sonam, who wore a Collette Dinnigan dress with Giorgio Armani ballet flats and earrings by her mum Sunita, to the show added, "Amitabh Bachchan is the coolest person ever! He is so so chic.. I'm officially majorly star struck! The duo visited the 'KBC' sets to promote their movie 'Mausam' which releases September 16. Shahid plays an Air Force pilot in the film, which is his father Pankaj's directorial debut.For regular updates on the latest happenings in Bollywood kindly subscribe www.youtube.com/thebollywoodshow