Actress Kangana Ranaut believes she has given her best shot ever to her forthcoming movie "Queen".

"My role in 'Queen' is very challenging and as an actor, I believe I have never done such good work in any film before. I haven't got such a good opportunity before," the 26-year-old said here Thursday in an interview.

"Queen" is the story of a Delhi-based girl Rani, who goes on her honeymoon alone due to some circumstances.

The film, which released Friday, also stars Lisa Haydon and Rajkummar Rao.