Boom is a Bollywood film released on 19 September 2003. It explores the involvement of the fashion world with underworld crime.
Directed by Kaizad Gustad and produced by Jackie Shroff's wife, Ayesha Shroff, the film features Amitabh Bachchan, Jackie Shroff, Gulshan Grover, Padma Lakshmi, Madhu Sapre, Zeenat Aman and Katrina Kaif. Boom was Katrina Kaif's debut film. She was a last minute replacement of model Meghna Reddy who left the film and Katrina was cast.