The US reality star uploaded this incredible picture of her all-natural butt to Twitter yesterday, with the caption: "Happy Sunday!"
Posing on the beach in a tight black swimsuit, it's clear Kim wanted her curvaceous bum to dominate the photograph.
Kim has often been accused of having a surgically enhanced bottom, but she proved it is all real last year by having an X-ray.
In scenes that were aired on Keeping Up With The Kardashians, Kim laid on a table as a doctor took a series of pictures.
She declared: "Today I am gong to have a butt x-ray to prove to the world it's real.
'This is a really crazy request but my sisters have dared me to get an ass X-ray because of all the rumours it's not real.
'If I were to have a fake ass, wouldn't it be dimple free?"
Once vindicated, Kim added: "I'm so glad I did this x-ray.
"The whole world has been doubting me - this is the best thing I could've done."
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