Natalie Portman leading bull rider movie 'Bronco Belle'

Actress Natalie Portman.

The "Jackie," "Thor" and "Star Wars" actress has the main role in a movie about the sport of bull riding.

Making the movie is director Anna Rose Holmer, who helmed "The Fits," a dance troupe drama that won praise during a 2016 festival run ahead of more general releases in 2017.

Holmer and Portman worked together on the March 2017 music video for James Blake's "My Willing Heart."

The story has been compared to that of sports film epic "Rocky" and "interest is already there," according to Deadline, as studios are being invited to move the project into production.