Vidya Balan, undoubtedly, had worked very hard for The Dirty Picture, including gaining all that weight for the movie. It seems her efforts have finally paid off! She earned the Best Actress award for her work in the movie at the National Awards.

Vidya Balan's designer in the film, Niharika Khan, also received an award for best costume designer.

Onir's film 'I AM',  dealing with social issues like gay rights and child abuse won the best Hindi film award.

Salman Khan Production's 'Chillar Party' won the Best Children's Film Award, while RA.One, despite faring badly at the Box Office, was awarded for the Best Special Effects.

Here's the full list of National Awards 2012

1) Best Hindi Film: 'I Am'

2) Best Feature Film: 'Deool and Pyaari'

3) Best Bengali Film: 'Ranjana Ami Aar Ashbona'

4) Best Children's Film: 'Chillar Party'

5) Best Actor: Girish Kulkarni for 'Deool and Pyaari'

6) Best Actress: Vidya Balan, 'The Dirty Picture'

7) Best Supporting Actor: Appu Kutty

8) Best Choreography: Bosco-Caeser for the song 'Senorita' from 'Zindagi Na Milegi Dobara'

9) National Award: Special jury award for Anjan Dutta

10) Best Editing: Praveen KL For 'Aranyaa Kandam'

11) Best Special Effects: 'RA.One'

12) Best Make Up: Vijram Gaekwad for 'The Dirty Picture' and 'Bal Gandharva'

13) Best Costume Designer: Niharika Khan for 'The Dirty Picture' and Neeta Lulla for 'Bal Gandharva'

14) Best Female Playback Singer: Rupa Ganguly

15) Best Male Playback Singer: Anand Bhate for 'Bal Gandharva'

16) Special Mention: Director Shari ('Adi Madhyantam'-Malayalam Film) and Mallika for Byari Film

17) Best Debut Film by a director: 'Aranya Kaandam' (Tamil)