The tennis star sang a rendition of the 1990 Divinyls song in a clip posted Saturday ahead of October’s Breast Cancer Awareness Month.
Chrissy Amphlett, lead singer of the Divinyls, died after battling the disease in 2013. The song, which originally had a sexual connotation, has been repurposed for the I Touch Myself Project to promote early breast cancer detection.
“Yes, this put me out of my comfort zone, but I wanted to do it because it’s an issue that affects all women of all colors, all around the world,” Williams wrote on Instagram Saturday. “Early detection is key ― it saves so many lives. I just hope this helps to remind women of that.”
Watch Williams sing above.
Editor’s note: Williams chairs the board of advisers for HuffPost’s parent company, Oath.