The 44-year-old actor says the kind of films Vidya chooses makes her different from other actors.
"Vidya is a dynamite package. She's really a celebration. She's a very unique actor and we're very lucky to have her in the industry.
"She has done some wonderful work. She has a great talent in choosing and talent is the choices that you made. She has not taken an easy path to walk on, which is always more exciting," Arjun told reporters during a promotional event of the film.
"I really didn't know Vidya before this movie. We became friends during this film. We used to meet before but socially. I've seen her work in the past and I thought she would be very serious.
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"A girl, who sits in a corner and only concentrates on her character. Undoubtedly she is all of them. But when I saw her after we did one, there was a twinkle in her eyes. She has got a little babiness inside her."
"Every actor needs to have that kind of babiness inside him or her to be good. It actually makes your imagination good and Vidya has retained that. She made all of us very comfortable on the sets. It was wonderful to work with her."
Vidya, who was also present at the event, all praise for Arjun.
"Arjun is an overall package. His voice, his attitude and not to mention his laugh, I just love his laugh."
"Kahaani 2: Durga Rani Singh" will hit the theatres this Friday.