Lisa Rinna Flaunts Her Insanely Fit Abs in a Nude Bra and Undies

Renew your gym membership and say sayonara to carbs, because Lisa Rinna is out here showing off her fabulously fit physique and it's all the inspo we need to get serious about our goals. The Real Housewives of Beverly Hills actress is no stranger to showing a little skin — her legendary dance moves are often captured while she's sporting skimpy swimwear (or just Skims) — but in a recent Instagram post, the California-based multi-hyphenate is flaunting her killer abs in undies for a good cause. 

On October 17, Lisa shared a pic on Instagram wearing a nude set of skivvies while in her closet. Sure, we can't get over her amazing figure, but the message behind the shot is what counts. She explains in her caption, "#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." 

Lisa and a slew of other celebs are taking part in the challenge posed by the new undergarments line The KIT created by celeb stylist and Kardashian family friend Simone Harouche and former creative director of Juicy Couture Jamie Mizrahi. Proceeds from the brand will benefit the Women's Cancer Research Fund as part of a breast cancer awareness and prevention initiative. 

Lookin' good, Rinna.