Kangna Ranaut is on a perfection spree

Kangna Ranaut is on a perfection spree. And her upcoming film Knock Out will see her not just in the mantle of an actor but also a dancer. The actress will don the avatar of a rock star and head bang to a groovy title track with co-star Sanjay Dutt on the guitar. But the making of the song was not smooth sailing for Kangna, who was actually running high temperature on the day of the shoot. The