Body-shamers beware! Celebrated author J.K. Rowling not only looks down on your petty critiques, but will also move quickly to embarrass you in front of millions.

Rowling proved this point in grand fashion last Saturday after celebrating Serena Williams' sixth Wimbledon title and 21st Grand Slam win. While many online cheered the 33-year-old on her incredible accomplishment on the court, others decided instead to mock her muscled physique as lacking femininity. Rowling quickly took one Twitter user to task over his comments. One tweeter suggested that Williams is "built like a man," and Rowling responded with images of Williams in a dress and saying, "Yeah, my husband looks just like this in a dress. You're an idiot."

That perfect response quickly went viral and has since been retweeted over 85,000 times and favorited by more than 110,000.

As it turns out, Rowling had an opportunity to meet Serena before her match, tweeting a photo of the pair and publicly throwing her support behind the star.

Williams, who has had to deal with "idiots" critiquing her physique the entirety of her professional career, said in an interview with the NY Times that it's taken time, but she's now happy with her body.

"I realized that you really have to learn to accept who you are and love who you are. I’m really happy with my body type, and I’m really proud of it," she said. "Obviously it works out for me. I talk about it all the time, how it was uncomfortable for someone like me to be in my body.”

At Sunday's Wimbledon Dinner, Serena further silenced the body-shamers with a stunning form-fitting pink gown she described simply as "swerve."

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Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

J.K. Rowling defends Serena Williams against body-shamers
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