News Kourtney Kardashian Rocks Next-Level Underboob in Plunging Bikini By Isabel Jones Isabel Jones Instagram Twitter Isabel is an Oregon-born and Brooklyn-based writer and editor with a special interest in pop culture. InStyle's editorial guidelines Updated on April 27, 2017 @ 11:30AM Pin Share Tweet Email We independently research, test, review, and recommend the best products—learn more about our process. If you buy something through our links, we may earn a commission. Another day, another bikini photo … Kourtney Kardashian ventured to the beach in Punta Mita on Wednesday to soak some rays and take to the waves for a bit of jet skiing. The eldest Kardashian sister, 38, showed off her assets in a high-cut navy blue Triangl bikini (shop a similar look here) that exposed a generous sliver of side boob and put her toned (and tan!) bod on display. Kourtney paired her low-cut bikini with a delicate gold choker (shop a similar look here), a matching bangle, and a pair of pink reflective shades. The mother-of-three polished off her beach-ready look with a multi-braid ‘do. Splash News Note: It’s hardly the first time Kourt has dared to bare some underboob on her girls’ trip. And that’s not all she’s been baring… Kourtney Kardashian Gets Caught Napping in Sexy Underboob-Baring Bikini With a body like that, we can’t say we blame her! FLAUNT. IT.