Vidya Balan's "The Dirty Picture"

Vidya Balan's "The Dirty Picture" is a Hot Movie in Hindi that will be released by the end of 2011 on December 2.
Why it takes too long to release the movie , even after its production is completed.
The answer is that - This film is a tribute to Silk Smitha and will be released only on the birthdate of Silk Smitha which is on Deecember 2.
In the movie 'The Dirty Picture' the cast of the film are Vidya Balan, Naseeruddin Shah, Tusshar, Emraan Hashmi.