Boom is a 2003 Indian Hindi-language black-comedy thriller film directed by Kaizad Gustad and produced by Ayesha Dutt. The film stars Amitabh Bachchan, Jackie Shroff, Gulshan Grover, Padma Lakshmi, Madhu Sapre, Zeenat Aman and Katrina Kaif. Boom was Kaif's debut film as she was a last-minute replacement of model Meghna Reddy. The movie released on 19 September 2003, exploring the involvement of fashion world with underworld organised crime.