The film, an examination of an extra-marital affair and its consequences, was packed with high-profile actors - Shah Rukh Khan, Amitabh Bachchan and Abhishek Bachchan, Rani Mukerji, Preity Zinta and Kirron Kher. It explored themes of adultery and extramarital affairs and was promoted with the tag-line, "A Love That Broke All Relationships".
Big B shared this throwback picture of himself with Abhishek.
Mr Bachchan also shared this on Twitter:
Karan Johar wrote on Twitter it was 'the most special film' of his career:
Karan also thanked his team with this tweet:
The hashtag #10YearsOfKANK trended on Twitter early Thursday morning.
Meanwhile, Karan Johar is gearing up for the release of Baar Baar Dekho, which he has co-produced along with Ritesh Sidhwani and Farhan Akhtar. Mr Bachchan's Pink is scheduled for release on September 16.