Kourtney Kardashian Flaunts B*tt and Side B**b in Bikini Selfie

If you got it, flaunt it, right?! It looks like Kourtney Kardashian, 36, has been working those squats HARD and is ready to give her sisters, Kim and Khloe Kardashian, a run for their money in the booty department. She showed off her enviable backside — and a whole lot more!