Rocky Aur Rani Ki Prem Kahani: On Ranveer Singh's birthday, Karan Johar announces a new film with Alia Bhatt and the Simmba star

Rocky Aur Rani Ki Prem Kahani: On Ranveer Singh's birthday, Karan Johar has announced that he is back with a new movie with Alia Bhatt and the Gully Boy actor