If she effortlessly essayed the role of a sex symbol in "The Dirty Picutre", it was a cakewalk to play a pregnant woman in search of her husband in "Kahaani", says Vidya Balan.

Video: Vidya Balan promotes 'Kahaani' in her pregnant look

"It was not tough at all. During our college life, we all friends used to do all the nautankis and these stand-up items. And my favourite role would always be of a pregnant woman. So the walk and all came to me very naturally," Vidya, 33, told reporters here.