Serena Williams is baring herself for breast cancer awareness month.

The tennis star appears topless in a new video in which she sings the song, "I Touch Myself" while covering her breasts with her hands.

PHOTO: Inspired by Chrissy Amphlett, who passed away from breast cancer in 2013, I Touch Myself Project is once again singing her song to remind you to ‘touch yourself’ featuring Serena Williams.
I Touch Myself Project 2018/YouTube
Inspired by Chrissy Amphlett, who passed away from breast cancer in 2013, I Touch Myself Project is once again singing her song to remind you to ‘touch yourself’ featuring Serena Williams.

The 37-year-old pro shared on social media that the video took her "out of my comfort zone" but she did it to "remind women to self-check regularly."

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"Early detection is key -- it saves so many lives. I just hope this helps to remind women of that," she wrote.

View this post on Instagram

This Breast Cancer Awareness Month I’ve recorded a version of The Divinyls global hit “I Touch Myself” to remind women to self-check regularly. _ 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 music video is part of the I Touch Myself Project which was created in honor of celebrated diva, Chrissy Amphlett, who passed away from breast cancer, and who gave us her hit song to remind women to put their health first. The project is proudly supported by @BerleiAus for Breast Cancer Network Australia. _ Visit the link in my bio to find out more. #ITouchMyselfProject #BerleiAus #BCNA #DoItForYourself

A post shared by Serena Williams (@serenawilliams) on Sep 29, 2018 at 8:19am PDT

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The video is part of the I Touch Myself Project, which was launched in 2014, in partnership with bra manufacturer Berlei and inspired by Australian singer Chrissy Amphlett, who died in 2013 after battling breast cancer and multiple sclerosis.

Amphlett was the frontwoman for the Australian rock band Divinyls, whose biggest hit was 1991's "I Touch Myself." She was 53.