"When I saw the final cut I was completely surprised by what the movie was like. I thought we were shooting something like almost documentary style, and then I watched it and it was an over the top thriller," Portman said.
Despite the surprise, Portman has fond memories of working on the film and revealed that Aronofsky was "genuinely interested" in her input during the making.
"It was an incredible experience for so many reasons. I had always loved dance so much. It is the art I am most moved by, that expresses things that can't be expressed by other media. It took 10 years for it to come together.
"Darren was a great collaborator. Darren was genuinely interested in my point of view and my input. It felt like a partnership," she said.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)