The reality TV star and part-time model posed in the simple, yet stylish matte black two-piece for a photo on Instagram on Saturday (6 July) and captioned the snap: "Pool day with @jordynwoods".
Kylie accessorised with a pair of black aviator sunglasses and a couple of rings, while her mane of brown hair was left hanging down by her shoulders.
Proving that she's a little less high maintenance than her older Kardashian sisters - Kim, Khloe and Kourtney - the teenager was fresh-faced. Well, she is going to be splashing around in the water!
Kylie has spent a number of days in a bikini recently, after celebrating the 4th of July in the sunshine last week with her 17-year-old sister Kendall and her rumoured boyfriend, Jaden Smith.
The group of youngsters enjoyed the national holiday in celebration of America's independence by hanging out at Bruce Jenner's Malibu beach house, surfing, swimming and even having a go at skateboarding.
And it sounds like Kylie had a great time with her pals, as she later tweeted: "Amazing fourth. Couldn't be more thankful for the people around me x."
What do you think of Kylie's pool day bikini? Let us know below, as the best comment from across the website each week wins £50!
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