Despite having launched Alia Bhatt into stardom, Karan Johar believes that he cannot take credit for her achievements. While hailing her as one of the best actors in the industry, the filmmaker in a recent interview said that he has given her the least challenging role of her career. Conceding that while he is overwhelmed by her success, he is also concerned about her. Quoting Shah Rukh Khan, KJo said, “Too much too soon, she will always have to be at the top of her game.” The filmmaker is teaming up with his protégée again in his upcoming directorial venture, Rocky Aur Rani Ki Prem Kahaani.

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