Khloé and Kourtney Kardashian Shut Down Instagram With Not 1 but 2 Ab-Baring Selfies

On Saturday, both Khloé and Kourtney Kardashian took to Instagram to share photos from their gym session, and though it's hard to believe, they still keep getting hotter. In the snaps, the ladies are shown proudly flaunting their toned bodies in matching workout gear. Khloé captioned her photo, "Gym selfie with the MILF," while Kourtney wrote, "Double gym selfie." Of course, this isn't the first time Kourtney's given us a peek at her ab-tastic figure. In August 2015, the reality TV star took her Instagram game up a notch when she posted a pre-gym selfie showing off her fit physique, adding to her long list of sexy moments on social media. Keep reading to see their posts, and then check out this utterly mesmerizing GIF of Khloé's butt.