Bethenny Frankel, 51, displays her impressively taut abs as she flashes Skinnygirl underwear

Bethenny Frankel put her impressively taut abs on full display as she gave her 2.4 million Instagram viewers a peek at her underwear on Thursday. Baring some skin: Bethenny Frankel put her impressively taut abs on full display as she gave her 2.4 million Instagram viewers a peek at her underwear The top of the entrepreneur's toned thigh was visible in the image, in which she modeled a white pair of bikini underwear with 'Skinnygirl' stamped in black across the band. Brand endorsement: On Thursday, the 51-year-old Real Housewives of New York City alum took to her Instagram Story to flash her underwear, which was by her own brand SkinnyGirl Shapely: Bethenny Easy access: She flashed her dusty mauve bra as she pulled down her top to demonstrate its accessibility Bethenny added that the top provides easy access for 'people who are breastfeeding' or 'who have had surgery.' Sexy: She described the underwear as 'sexy boy shorts that pop the booty a little bit' and said they 'Do smooth' and 'do look great under skirts or jeans' Earlier, the television personality also showed off the skimpy ensemble that she wore to present an award at the iHeart Podcast Awards.