Serena Williams is making a statement for breast cancer awareness month. In a video, the 37-year-old sings the Divinyls "I Touch Myself" while topless.

In an Instagram post, the 23-time Grand Slam champion said, "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. Early detection is key—it saves so many lives. I just hope this helps to remind women of that."

The video is part of the I Tough Myself Project, which is dedicated to Divinyls singer Chrissy Amphlett, who died in 2013 after a long battle with breast cancer.