Khloe Kardashian shares video of Kourtney sitting on the toilet to celebrate her birthday

Today is Kourtney Kardashian's birthday and to celebrate her, Khloe posted a video of memorable moments shared between both of them. In one of the shots, Kourtney can be seen sitting on the toilet. Other clips from the video are quite playful.
Khloe captioned the video:  "Happy birthday to the Milly to my Vanilli @kourtneykardash"

Kourtney is 38-years-old today. She is the eldest of the Kardashian/Jenner siblings and is a mother to three kids; Mason, Penelope, Reign.

 See the video below. 

Happy birthday to the Milly to my Vanilli @kourtneykardash

A post shared by Khloé (@khloekardashian) on Apr 17, 2017 at 9:39pm PDT