Kourtney Kardashian Shares a Sexy Snap From Nude Photo Shoot in Costa Rica on Mother's Day

Kourtney Kardashian is feeling herself!

The 38-year-old mother of three took to Instagram on Sunday to share a picture from her impromptu nude photo shoot during the Kardashian family vacation in Costa Rica, featuring her wearing nothing but a bracelet. Kourtney sits on a rock with her wet hair hanging down, giving the camera a fierce stare.

"Mother nature," she captioned the racy snap.

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Earlier in the day, Kourtney shared a much tamer picture with her three children -- 7-year-old Mason, 4-year-old Penelope and 2-year-old Reign -- to celebrate Mother's Day.

"I thank God every morning for these three little angels who changed my heart forever," she wrote. "I feel incredibly blessed to be their mommy. Happy Mother's Day to all mothers raising our future."

Kourtney's nude photo shoot was featured on Sunday's episode of Keeping Up With the Kardashians, in which she told Scott Disick the two were never getting back together after he was caught bringing a girl to their family vacation.

"Obviously, we're both trying to move on," Scott said, defending himself after he was confronted by the Kardashian family after getting busted with a random girl. "That's what we've all been saying. So I'm trying to do everything I can f**king do to not think about her."

WATCH: Kim Kardashian Flips Out on 'F**king Loser' Scott Disick, Tells Kourtney to 'Move On'

"I'm a sex addict!" he later claimed. "I'm a f**ked up, horrible sex addict."

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