This video is both hilarious and depressing.
Posted online by an Internet user who wrote as a caption that there was a time when Kendall Jenner and Kylie Jenner "were little [and] wild," the footage was then re-Tweeted by Kendall.
It features the sisters during their early days of filming Keeping Up with the Kardashians, arguing and fighting and acting generally how kids their age were meant to act.
Contrast that with the actions today of the 19-year old and the 17-year old.
Nary a moment goes by when one of them isn't posing on Instagram in her lingerie.
""Look at my little sisters - look at them! - they're insane," Khloe says at one point in the above video.
That still holds true. But for a more depressing reason.