Though Taapsee made her Bollywood debut in 2013 with "Chashme Baddoor" and went on to work in "Baby", it was last year's "Pink" which brought the 29-year-old actress widespread acclaim.
Shoojit, who backed the social drama, feels Taapsee has managed to stay afloat without sinking in to the pressure of stardom.
"Taapsee is so unpolluted yet, by the whole stardom culture of Bollywood. She is not in that race at all. It is a big struggle to keep away from it, to not let the pressure come to you. She has that in her," Shoojit told PTI.
Shoojit says it was her performance in the upcoming Amit Roy directed romantic-comedy which helped her bag a role in "Pink".
More From This Section
"You see the potential in something and then you decide on the next one. I am not going for a face. I looked at her talent and I was blown away.
"Running Shaadi.Com is Taapsee Pannu. She is the film. You actually desire that in every frame she is there. She sets the screen on fire. The day Amit showed me a small clip I was sold out. She was so nice."
"Everyday, Taapsee, Amit, our writer Navjot Gulati and I used to rehearse. We worked a lot and improvised with them. Taapsee and Amit brought a lot of dialogues to the film.
"We would record it and then add those in the script. Finally what we shot, it comes from all the actors. They brought in their life, observations," the director said.
"Running Shaadi.Com" is scheduled for February 17 release.