Kim Kardashian gave us some major "One Billion Years B.C." flashbacks this week when she posted an Instagram photo of her hot bod in a skimpy fur bikini.
But while some erroneously thought her hubby Kanye West designed the hairy two-piece, toofab has uncovered the real story behind the sexy swimsuit.
While in Park City, Utah last week, Kimye made a stop at Alaska Fur Gallery, where the owner of the store gifted her one of their famous "Furkinis." The creation usually retails for $70.
And Kim couldn't get in that thing faster, sharing pics with her 25 million followers shortly after receiving it.
We're told the two-piece was made from farm-raised rabbit fur, meaning the animals' pelts are used for clothing, while the meat and oil are sold for consumption.
FYI: The store also carries a male jockstrap version that goes for $25. $35 with a tail.
Unfortunately, Kanye didn't grab the guys' version -- but the two seemed very happy with Kim's.
West was the one who took the photos below, as his curvaceous wife posed away.
What do you think of the unique bikini? Sound off below!