Ae Dil Hai Mushkil: Karan Johar REVEALS details about Ranbir, Aishwarya and Anushka's characters in the film

Ae Dil Hai Mushkil director Karan Johar reveals details about the roles that Ranbir Kapoor, Aishwarya Rai Bachchan and Anushka Sharma are playing in the film.