Kourtney Kardashian is showing her love for sister Kylie Jenner in a very shocking way!
In honor of Kylie's 19th birthday, which was Wednesday, the reality star posted an old video to her Instagram — and the two are in a very compromising position!
In the video, Kourt walks up to her little sis and begins to hump her (LOL!). She captioned the video, "Happy Birthday to my little Kylizzle! I just realized today that we have only been in one fight ever which as you know was over a Tinker Bell nightgown. We're so cute."
If you tune in to Keeping Up With the Kardashians, you know the group of sisters constantly feel up each other as way of showing love. We've rounded up a few of these not-so-appropriate moments, and you can view them by clicking through the slideshow!
Click through the gallery to see the times the Kardashian sisters were inappropriate with each other!