"Absolutely crazy media report suggesting I have said something about Katrina! I have not! Its totally baseless and a lie," tweeted the 39-year-old.
According to media reports, Karan was overheard joking about Katrina's posing skills at a recent party and making comments on her monotonous looks for magazine covers. It was also said that he had mimicked some of her poses.
However, the filmmaker is upset with the news and finds the reports "ridiculous". "Katrina is not only a dear friend but also a supremely talented and hard-working megastar! And all this reportage is ridiculous," he tweeted.
Photos: 'Dangal' girls Sanya Malhotra, Fatima Sana Shaikh's dinner outing
Photos: Salman Khan, Daisy Shah spotted at the Mumbai airport
Photos: Rakhi Sawant to play Honeypreet in Ram Rahim biopic
Photos: Arvind Kejriwal asks Kamal Haasan to join politics
Photos: TV actress who played goddesses on the small screen