The reality TV star uploaded a snap of her with a tiny capuchin monkey resting on her head, while she celebrated her pal, Maria Menounos, turning 35 years old on Saturday (8 June).
Khloe posted the picture on her Instagram account, along with the caption: "There's a monkey on my head!!!!"
In the photo, the 28-year-old appears to be pretty shocked that the tiny creature has climbed up onto her shoulder and made himself at home there.
Khloe, 28, is also seen wearing a blue garland of flowers around her neck, in keeping with the Hawaiian-themed bash.
Maria is known for presenting the American entertainment news programme, Extra, and she rang in her 35th year by donning a bikini and hosting a pool party for herself and her celebrity friends.
And Khloe wasn't the only Kardashian invited, as Khloe's momager, Kris Jenner, was also spotted partying the night away with her daughter.
Khloe recently revealed that Kris and her step-dad, Bruce Jenner, often live in separate homes because they like their own space.
But while Bruce stays at their second home and has some down time, it sounds like Kris is busy dancing until the early hours with her children!
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