Natalie Portman has some big shoes to fill (or should we say little, based on her height?).

The 33-year-old Oscar winner is set to play Supreme Court Justice Ruth Bader Ginsburg in the upcoming movie On the Basis of Sex, E! News has confirmed.

According to Deadline, who first broke the story, the film will follow "the travails of Ginsburg as she faced numerous obstacles to her fight for equal rights throughout her career." The script was written by Daniel Stiepleman. Marielle Heller, who directed the 2015 drama The Diary of a Teenage Girl, is in talks to direct.