Focus Features has revealed the official trailer for the biographical drama On the Basis of Sex [OBSEX]. Felicity Jones [FJONE] stars as Ruth Bader Ginsburg as a young lawyer when she teamed with her husband Martin Ginsburg, played by Armie Hammer [AHAMM] to bring a case before the U.S. Court of Appeals to overturn a century of gender discrimination. With the documentary RBG already in theaters and On the Basis of Sex opening on December 25th, 2018 is turning into a celebration of her 25th year on the Supreme Court bench.