20 reasons why Serena Williams is a badass on and off the tennis court

There's no doubt about it - Serena Williams is a badass athlete.

Since she started playing tennis at age three, the 34-year-old tennis star has become one of the most dominant athletes around.

She's also a businesswoman, a philanthropist, and a karaoke fan. In between tennis matches and practice, she still found time to pop up in Beyoncé's "Lemonade" video.

As Serena prepares for the 2016 Wimbledon finals July 9, here are 20 reasons why she is a badass and the ultimate athlete: