Kourtney Kardashian - Lead
Credit: Luca Teuchmann/WireImage

Kourtney Kardashian is proving she's one hot mama! The 37-year-old Keeping Up With The Kardashians star took to Instagram on Tuesday to share a shot from her vacation, and the mom-of-three has never looked better.

The brunette beauty bared her abs in a red-hot ensemble that included a simple bandeau and flowing, sheer wide-legged pleated pants, which she captioned, "On an island."

Kourtney Kardashian Insta - Embed
Credit: kourtneykardash/Instagram

In the image, the oldest Kardashian sibling is silhouetted against a stunning view of the ocean. She accessorized her all-red look with gold bangles and kept her dark tresses long.

While it's unclear which island the reality star is currently visiting, Kardashian also flaunted her summer body just days earlier in Miami. On the Fourth of July, she wished her fans a happy holiday and showed off her curves in a flattering one-shoulder black Norma Kamali one-piece swimsuit adorned with silver studs, pairing her look with gold jewelry and mirrored aviators while hanging out with friends poolside.

VIDEO: Kourtney Kardashian's Sexiest Instagram Moments

One thing's for certain - this hot mama is definitely bikini body-ready!