Lisa Rinna is supporting a worthy cause in the sexiest way possible. Last week, the 57-year-old Real Housewives of Beverly Hills star posted photos of herself in her bra and underwear. In the caption, she reminded her followers that October is Breast Cancer Awareness Month and urged them to support a cancer research fund.

The feedback she got was super positive—not only for her breast cancer activism but also because of her age-defying six-pack abs, which the photos revealed. 

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“Both my Mom and my sister are breast cancer survivors," Rinna wrote, explaining that she has a personal connection to the disease. 

View this post on Instagram

#KitsToKickCancer @simoneharouche @sweetbabyjamie @wcrfcure #breastcancerawareness #breastcancerawarenessmonth 💕 Both my Mom and my sister are breast cancer survivors. 🙏🏻 take a mirror selfie in your @thekitundergarments 💞proceeds go to @wcrfcure

A post shared by Lisa Rinna (@lisarinna) on Oct 17, 2019 at 8:48am PDT

Rinna then encouraged women to strip down and take their own underwear selfies to help fund breast cancer research. It's part of her partnership with The Kit Undergarments (she’s wearing them in her photos) and the company's #KitstoKickCancer initiative. For each Instagram selfie taken in their lingerie, the initiative donates money to the Women's Cancer Research Fund.  

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I said to founder @sweetbabyjamie Give me a reason to pose half naked for a good cause……Hunny! 🌸 @thekitundergarments @wcrfcure #breastcancerawarenessmonth #KitsToKickCancer

A post shared by Lisa Rinna (@lisarinna) on Oct 17, 2019 at 5:21pm PDT

Rinna’s followers had plenty to say about her campaign—and the revealing posts.

“Breast cancer survivor here. Thanks for the awareness," wrote one. Another posed the question half the internet was probably wondering: “How do you look like that in your 50’s??” 

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