Actress Alia Bhatt says working in Karan Johar's "Kalank" has been double fun for her as she is getting a chance to work with a unique cast in a film being directed by friend Abhishek Verma. Alia said this while interacting with the media along with Vicky Kaushal and director Meghna Gulzar during the promotions of their upcoming film "Raazi" here on Saturday. She has already started shooting for "Kalank", which will be Dharma Productions' next film starring Varun Dhawan, Aditya Roy Kapur, Sonakshi Sinha, Madhuri Dixit and Sanjay Dutt.
