The 26-year-old says that the curly-haired Gangster' star is a wonderful person.
"Kangana is experienced. She is wonderful and sweet, but I was scared because of her experience. She is so senior, but made it easy for me to be around her. If there were retakes because of me, she used to be cool about it and I appreciate that," said Nikunj.
The '24 tele-series' actress plays a Muslim character, who brings a twist in the film's story.
Revolver Rani' also features Vir Das.