Sinha took to Twitter to "raise a toast" to the amazing progress of the trailer which was released Jan 10.
"Is it okay to raise a toast in the afternoon? A toast to 1.5 million YouTube views of `Gulaab Gang` trailer in four days," Sinha posted on the microblogging site Tuesday.
Starring Madhuri Dixit and Juhi Chawla, "Gulaab Gang" talks about pink sari-clad women activists who protest against the social injustice against women in the Bundelkhand region of central India. Madhuri will be seen in a fiery avatar and has action scenes as well while Juhi plays a politician.
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Directed by Soumik Sen and presented and co-produced by Sahara Movie Studios and Bharat Shah, the film will hit screens March 7.