'Katti Batti' director Nikhil Advani has reportedly acknowledged Aamir Khan's involvement in the project as Creative Consultant. “Aamir has been maniacally obsessed with this film. He has gone all-out to ensure it turns out to be a special film. Katti Batti would not be the film it is now without Aamir’s contribution. After I signed Imran for the film I narrated the script to Aamir. He immediately suggested some changes that I incorporated,” said Advani. “The last 22 minutes of Katti Batti are completely Aamir’s. I have no hesitation in acknowledging his contribution in any way he wants.”