Kourtney Kardashian shows off her bum while chilling at the beach side.

The American television personality, socialite, businesswoman and a model kourtney Kardashian who is still enjoying her vacation in Mexico shared some new photos of herself laying down and another showing of her booty at the beach side. She captioned her the photo: "This is how we do it down in Puerto Rico" The caption is in reference to Justin Bieber's Despacito remix. Below is the booty photo after the cut...