To prepare for her role as Datto, Kangana used to roam around the Delhi University campus in the same getup, and students around were not aware.
Anand L. Rai (director) initially wanted to cast another actress as Datto, but when he saw Kangana's performance in 'Queen,' he told her that only she can compete against herself.
In the dual role played by Datto, a mole clearly visible on Tanu's neck is masked off and noticeable.
The song "Banno Tera Swagger" was misheard by some audiences as "Banno Tera Sweater". Swagger means attitude.
Kangana's first double role.