After Amitabh Bachchan famously played Haji Mastan in ‘Deewar’ now it's Ajay Devgan's turn to don the grease paint and play the role of notorious gangster Haji Mastan role in Milan Lutharia's forthcoming film ‘Once Upon A Time In Mumbai’. The film will also have Emraan Hashmi who will be embracing Bachchan's dressing style of 70's which details the emergence of underworld and Kangana Ranaut as Ajay’s girlfriend. Interesting to watch how they will portrait the crime scenario in Mumbai during 70's and 80's. A must watch video! Visit www.lehren.tv for more Bollywood news and videos.