The 20-year age difference between 'Dhurandhar' actors Ranveer Singh and Sara Arjun has sparked a debate on social media after its first-look teaser was released on the actor's 40th birthday. "Sara Arjun was 18 when 'Dhurandhar' was being filmed," a post on Reddit read. "Let's just blame the parents here, they'd put their child in uncomfortable situations," another user wrote.