J.K. Rowling Defends Serena Williams Against Twitter Troll: "You're an Idiot"

J.K. Rowling

Following Williams' Wimbledon win, a Twitter user body-shamed the athlete.

J.K. Rowling called out a Twitter user after they body-shamed six-time Wimbledon winner Serena Williams Saturday morning.

Williams defeated rival Garbine Muguruza for her sixth title and fourth Grand Slam championship win on Saturday, but a Twitter user attributed Williams' "success" not to her talent, but to her figure they claim "is built like a man."

Rowling first posted, "I love her. What an athlete, what a role model, what a woman!" to which user @