And the truth is finally REVEALED!!!
[Image via Kylie Jenner/Instagram.]
And no, we're not talking about a beauty treatment although this certainly is a new look for these lovely Kardashian ladies!
The Kardashian sisters were definitely not afraid to get down and dirty as they slid down a slippery slide into a giant pool of muddy water!
Keeks and Kokes #MudRun
Nothing like some sisterly bonding time in the mud, right?
Ch-ch-check out the rest of their fun day in the mud (below)!