"This is all thanks to my director (Shoojit Sircar) and my audience for having faith and seeing me as Dolly Arora. For me, being happy is a small word. I am flying right now," Dolly, who played a loving mother to debutant Ayushmann Khurrana in the movie, said in a statement.
She shared the award with Kalpana for Malayalam film "Thanichalla Njan".
"For me, this is still a dream. National Awards have a true meaning for me and I am blessed," added the actress-designer, who first won a National Award for costume designing in 1996 for "Bandit Queen".
Actor Anu Kapoor, who played a Baldev Chaddha, a fertility expert in the movie, for a boy who turns a sperm donor to earn quick money, said: "I feel humbled and express my gratitude for the National Award, which I dedicate to my mother, late Shrimati Kamal Kapoor."
Ayushmann, who played the lead in "Vicky Donor", was happy with the recognition for his debut film.
"It's extremely overwhelming and I am proud to be a part of this project, which has a rare combo of quirk and credibility," said Ayushmann.