Kylie Jenner, Kim Kardashian pose in bikinis in Instagram snap: 'Wear your sunscreen'

Sisters Kim Kardashian and Kylie Jenner shared a photo of themselves lounging around in bikinis on Instagram.

While Kardashian, 39, opted for a black string bikini, little sister Jenner, 22, chose a nude-colored off-the-shoulder bathing suit.

"Yin [and] Yang," Kardashian captured the snap.

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"The most gorgeous women I know! Love you both!," their dad Caitlin Jenner commented.

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Jenner also shared a solo shot of herself applying sunscreen.

"Wear your sunscreen," she wrote to her fans.

Over the weekend, Kylie made headlines for posing in a bikini with a different sister.

Kylie and sister Kendall Jenner, 24, set hearts on fire with a playful snap showing off their fit figures in the sand.

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The Kylie Cosmetics founder shared the photo with her 164 million Instagram followers of the siblings wearing matching lime green bathing suits.