Celebrity filmmaker Karan Johar will return with the fourth season of his popular talk show Koffee with Karan in December this year. The show promises to have a few new faces who are ready to get a taste of this Koffee in the new season. The promo for the latest season has already been shot. Karan Johar will invite the top stars from the industry for a casual conversation over a cup of ‘Koffee’.