"The film's shooting has started. I had a great time. I was so nervous... I didn't want to forget my dialogues, so we did rehearsals. He is the best co-star I have ever worked with," Alia said here.
Stressing that Shah Rukh is a "passionate worker", and so, she never felt that "I am Alia and he is Shah Rukh Khan".
The movie is yet to be titled.
Meanwhile, Alia is busy promoting her forthcoming entertainer "Kapoor & Sons". Talking about her character in it, she said: "She is a girl-next-door kind of a girl. She has an emotional baggage and the film revolves around family and relationships."
Directed by Shakun Batra, "Kapoor & Sons" will release on March 18.