This might as well be a scene straight out of Karan Johar's film, 'Student of the Year'. At the filmmaker's party, his star students Varun Dhawan and Sidharth Malhotra apparently had a falling out. Says a source, “Varun and Siddharth were present at Karan Johar's birthday bash and there was a heated debate between the two of them.”

Also read: Sonam Kapoor and Parineeti Chopra patch up at Karan Johar's birthday bash