Serena Williams Names Prince Harry's Wife As The Toughest Woman She Knows – Above Beyoncé And Rihanna

Serena Williams is well known for her friendship with the Duchess of Sussex, but it seems that another royal has made an equally big impression.

The tennis ace has listed the Duchess of Cambridge as the number one 'bad**s' woman she knows.

The mother-of-one put Kate above two singing legends in her list of the toughest A-listers in an interview with Instyle.