Mumbai (Maharashtra) [India], August 11 (ANI): Sonam and Arjun appeared on 'Koffee With Karan' episode 7 and it was a laugh riot! Of course, many key and emotional topics were touched on by the host Karan Johar and Arjun Kapoor, Sonam was there just for a good laugh session, and we can't complain enough because we loved it!