"Shah Rukh Khan creates a character that will be remembered for years ahead....Gaurav in 'Fan' is a result of the performance extraordinaire of SRK!" Karan tweeted. Karan, who has worked with Shah Rukh in popular films such as "Kuch Kuch Hota Hai", " Kabhi Khushi Kabhie Gham..." and "My Name Is Khan," also "saluted and applauded" the Maneesh Sharma directorial.
"Adrenalin pumping....cinematically brilliant and a huge achievement...SRK is absolutely genius and beyond! Salute and applaud 'Fan'," he added.
The film, which has the 50-year-old actor playing a double role, released on Friday.