Loosely inspired by Uttar Pradesh-based social activist Sampat Pal and her Gulabi Gang, which works towards liberation of women in the state, the film is being directed by Soumik Sen.
"Gulaab Gang" is being produced by Anubhav Sinha, who shared the news through a Twitter post Sunday and wrote: "6:15 a.m, cheers, tears and a champagne shower. 'Gulaab Gang' officially in post production now."
The official uniform for Pal's Gulabi Gang is pink sari, and the cast and crew cut a pink cake to celebrate the completion of the movie's shooting.
Actress Juhi Chawla will be seen in a negative role in this social drama that also features Huma Qureshi of "Gangs of Wasseypur" fame.
Spotted: Virat Kohli, Anushka Sharma and other celebs at Mumbai airport
Photos: Salman Khan's 'special friend' Iulia Vantur at a song launch
Photos: Hrithik Roshan, Anushka Sharma, other celebs dazzle at event
In Pictures: Sex scandals involving Indian politicians
Photos: Abhishek Bachchan and Farah Khan at Boman Irani's birthday bash