In the film Mere Brother Ki Dulhan with Imran Khan and singer Ali Zafar, Katrina plays the craziest, zaniest, most stubborn and self-opinionated character of her career. And for that she needed special preparation. According to producer Aditya Chopra's brief, Katrina plays the temperamental girl after much preparation. Known to be well-behaved and gentle in person, Katrina plays a talkative ill-tempered busybody.
Says Katrina, "All I can say about my role is this girl is quite a number, the closest I came to playing something so challenging was in Namastey London and that was a cakewalk compared with this. The girl in Ali's film is something else. I have to go completely outside myself to play her. Whom am I observing to play the role? I am not telling."