Kabhi Alvida Naa Kehna,also abbreviated as KANK, is a 2006 Indian Hindi-language romantic drama film directed by Karan Johar, who also wrote it with Shibani Bathija, and produced by his mother Hiroo Yash Johar under the Dharma Productions banner. The film stars Amitabh Bachchan, Shah Rukh Khan, Abhishek Bachchan, Rani Mukherji, Preity Zinta and Kirron Kher. The film explores themes of marital infidelity and dysfunctional relationships, and was promoted with the tag-line "A Love... That Broke All Relationships".