Sara Ali Khan, who is all set to make her grand debut in Abhishek Kapoor's 'Kedarnath', said that she couldn't have done any of it without her co-star Sushant Singh Rajput."

On being asked to comment on her experience of working with Sushant, Sara said, "I am so glad that you asked me that. I have no idea how I have done this film. I have tried my best but I feel I couldn't have done any of it without Sushant. He has just been the most helpful person I have had."