"The biggest challenge was mouthing the dialogues which were very bold. The perception about nautch girls is wrong. Their way of speaking is so refined that they can attract people just by the way they speak. I think Waheeda Rehmanji played a role brilliantly in 'Pyaasa'," Kangana said at the music launch of 'Rajjo'.
To get her act right, she did extensive research for her role and event visited one of the red light areas.
"As far as my role is concerned, my director (Vishwas Patil) did such extensive research and handed it all to me while I signed the film. Apart from that, we did go to Nagpada and spoke to a few nautch girls to understand their state of mind, the way they live their lives," she said.
Union Home Minister Sushil Kumar Shinde, who was the chief guest for the event, was all praise for multi-faceted director Vishwas Patil.
Shinde said, "... When a person like him presents himself through his art, I really feel proud... Bureaucrats or politicians usually don't enter this field but Vishwas Patilji did. He has always worked on social related issues.