While the Kardashian's have been open about botox and lip fillers, they mostly laugh off the butt rumors.
"Once you start getting in the tabloids claiming you have fake body parts, then it's like, 'Okay, I made it. Now I'm really working out," Khloe explained to Redbook magazine in 2015. "Kourtney said yesterday, 'I got so happy because someone said I had butt implants.' And I was like, 'Doesn't it make you feel good?' She's like, 'I really feel good. I've got to keep it up!'"
Despite denying reports that they plumped up their backsides, Kim has admitted to getting butt injections -- for medical purposes.
In 2016, the mother of two, who suffers from psoriasis, admitted that she received cortisone shots in her butt, to treat symptoms brought on by the skin condition.