Kourtney Kardashian Shares Sexy Booty Photo Amid Scott Disick Miami Flings

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Kourtney Kardashian is sexy and she knows it!

The 37-year-old reality star took to Instagram on Tuesday to share a sexy photo of herself while vacationing in Costa Rica.

WATCH: Scott Disick Spotted With Bikini-Clad Blonde One Day After Cuddling Up to Her Friend

"I don't think you ready for this jelly," she captioned the post, showing off her toned booty in a white bikini. 

The racy snap was shared on the same day that her ex Scott Disick was photographed enjoying some fun in the sun with a blonde woman in Miami, just one day after cuddling up to model J Lynne.

Disick and Kardashian have not been a couple since the summer of 2015, but a source told ET on Monday that the father of three still has hopes of getting back together.

EXCLUSIVE: Kourtney Kardashian Is Not Hooking Up With Justin Bieber or Dating Scott Disick, Source Says

"Kourtney is happy being single, and Scott still hopes he has a chance to get her back one day -- but the chances of that happening are pretty slim," the source revealed, adding that Kourtney "could not care less" about Disick's recent hookups.

"Kourtney could not care less that Scott hooks up with other girls. They are broken up," the source shared. "There has been no chance of reconciliation for quite some time now."

See more in the video below.