Kim and Kourtney Kardashian Show Off Abs at Family Dinner in Costa Rica

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Where else can the Kardashians show off their collection of crop tops in January?

Kim and Kourtney Kardashian proudly flaunted their abs in tiny crop tops while heading to dinner during their family vacation in Costa Rica on Saturday night.

WATCH: Scott Disick Joins Ex Kourtney Kardashian on Family Vacay to Costa Rica

Kourtney paired a black-and-pink bra top with matching high-waisted pants by Fleur du Mal for the evening outing, while Kim put her cleavage on display in a sexy black-and-white look.

Their mom, Kris Jenner, and her boyfriend, Corey Gamble weren't far behind as the whole family got together for their first night of the tropical trip.

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WATCH: Kylie Jenner Flaunts Bikini Bod, Snuggles Up to Tyga in Costa Rica

Kourtney, 37, and Kim, 36, have clearly been putting in some major time at the gym, though it was their younger sister, Khloe Kardashian, who spearheaded a morning workout on Saturday.

Khloe, 32, and Kim got together for an intense exercise session in paradise, after which Kim explained that she never misses a day at the gym.

"I never Snapchat my workouts, just because… I don't know why. I'm just not Kourtney and Khloe," the mom of two shared on Snapchat. "But it's like, if I don't Snap it, then it's as if it never happened. But I work out every single day for over an hour."

See more from the family's winter getaway in the video below.