HBO's Harry Potter series has faced backlash over J.K. Rowling's transphobia and Nicola Coughlan is calling it out.

Nicola Coughlan spoke out against J.K. Rowling and HBO's new "Harry Potter" series after the author celebrated the U.K. Supreme Court's ruling that the legal definition of a woman is based on biological sex.

Bridgerton actress Nicola Coughlan has made her feelings clear on trans rights, with a swipe on social media at Harry Potter author J.K. Rowling. Rowling has been highly visible on social media this week, celebrating the UK’s Supreme Court ruling that a definition of a woman is a based on biological sex, not gender.