The makers of "Sanju" , which is creating waves at the box-office , have hosted a grand success party of their film here which was attended by the film's cast and crew. Ranbir Kapoor , who plays the titular role of Sanjay Dutt , has had the highest opening of his career in "Sanju". He kept it casual as he opted for a black tee and ripped denim in the party on a rainy Monday night.