Khloe Kardashian and Kendall Jenner Rock Skimpy Skirts in St. Barts With Pregnant Kim

Khloe Kardashian and Kendall Jenner were just asking for a wardrobe malfunction when they hopped on some ATVs in St. Barts while wearing some seriously sexy outfits.

The reality stars looked like they were shooting a music video as they posed on their four-wheelers while Keeping Up With the Kardashianscameras were on hand.

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Once again proving she's been hitting the gym hard, Khloe, 31, wore a figure-hugging black dress that left little to the imagination with its thigh-high slit and her side boob in plain view.

Kendall's style was just as skimpy. Also showing a lot of leg, the 19-year-old model paired a printed bikini top with a matching thigh-baring skirt and gladiator sandals. Kendall took a hair tip from her younger sister Kylie Jenner and sported some cornrows.

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Khloe and Kendall's older sisters, Kim and Kourtney Kardashian, were not seen on the ATVs but they still turned heads with their St. Barts styles. Kim, 34, flaunted her baby bump in a skin-tight, black maxi dress that she dressed up with red lipstick and big gold bracelets.

Kourtney, 36, and the ladies' mother, Kris Jenner, sported more loose-fitting ensembles, but like Kendall, they also rocked gladiator sandals. Kourtney wore a short, white frock and red lipstick for the family outing. Meanwhile, momager Kris, 59, chose a blue printed dress that, again like Kendall and Khloe, showcased a lot of leg.

Kendall and Kylie have admitted that they do take style cues from their older siblings, and that certainly was evident during the first day of the family's vacation in St. Barts. "Growing up around them and they are pretty stylish... we learn from them," Kendall confessed to ET.

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"I love Kim's style right now,” Kylie added. "I feel like Kourtney has the best style overall."

The Jenner sisters also shared with ET the beauty tips they got from the Kardashian girls. Check them out:

EXCLUSIVE - Kendall and Kylie Jenner Share Beauty Secrets From Kim, Kourtney and Khloe!

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