详细介绍：Prior to his acting debut, Dhawan and his Student of the Year co-star, Sidharth Malhotra, worked as assistant directors to Karan Johar on hi…Prior to his acting debut, Dhawan and his Student of the Year co-star, Sidharth Malhotra, worked as assistant directors to Karan Johar on his 2010 film, My Name Is Khan.详情