"I went to go get a cortisone shot in my butt. I lived right behind Kitson [the boutique in Los Angeles]. One of my neighbours was a dermatologist at Cedars,” she said during a live stream on her site. “I go in there and he’s like, ‘There’s a one in a billion chance that you will get a huge indent in your butt.’ Of course I get a huge indent on my butt."
Addressing the pictures of her “indent”, Kim says that’s when the implant rumours started.
The mother-of-two says she gets the injections every few years, and just had another one recently.
"Every few years I get a cortisone shot. And it’s so funny. I just got one as my psoriasis was so bad in Vegas. That’s a little unknown fact of me — I have to get cortisone shots every few years."
So there you have it, mystery solved.
Meanwhile, the 35-year-old has also revealed a surprising new 'do on Instagram this week, trading in her short locks for Rapunzel-esk long locks.