Tennis champ Serena Williams is mostly known for her skills on the court, but it turns out she’s quite the dancer too!

In a new ad for the brand Berlei, Williams is shown dancing alone in a studio to Billy Idol’s “Dancing with Myself,” with reckless abandon. Williams, who is an ambassador for the Australian brand, posted on Instagram, telling her followers that dancing is a passion that she does just for herself, and that it is all about “letting herself go.

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Whether you’re a fan of the tennis pro or not, you’ve got to admit—she’s got some pretty great moves!