The 57-year-old momager flaunted her assets in the Instagram photo by donning a string halter-neck bikini top and also accessorised in the pool with an eye-catching silver necklace.
Her short black hair was slicked back into a quiff, drawing attention to her smoky eye make-up.
Kris captioned the snap: "Last day of summer gonna miss you."
It's no secret that the mother-of-six likes to get glammed up and style herself like her daughters, so it almost comes as no surprise to see her in a tiny two-piece and showing off her impressive bikini body here.
Kourtney, Kim, Khloe, Kendall and Kylie are all fans of the bikini selfie and are often seen uploading candid pictures of themselves in their beachwear.
They've also each been involved in various bikini photo shoots over the years, which momager Kris has always championed.
So now it looks like it's Kris' turn to steal the limelight for a moment and prove that she can pull a mean pose in the water too!
Funnily enough, her photo was posted just a couple of hours after 17-year-old daughter Kendall uploaded a snap of herself modelling a two-piece as part of Agua Bendita Swimwear's new campaign.
The teenage model can be seen wearing a pretty purple bikini and a pair of patterned green shorts, while standing in a turquoise swimming pool.
We can see where Kris gets her inspiration!
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