Producer-director Karan Johar is celebrating 21 years of his second directorial 'Kabhi Khushi Kabhie Gham' which released on December 14, 2001. The film is noted for its music and the ensemble cast.

On Wednesday, KJo took to his Instagram to share a video of the film's BTS, in which one can see the cast and the crew of film and Karan at the helm of affairs, directing his actors, brainstorming on sets and having some lighter moments.