While munching on a salad, pregnant Kim tells Khloe, "So I was getting a massage last night, and the girl told me if you scratch yourself that's how you get stretch marks because your skin gets really itchy. And Rob has them. Maybe for the fact that he flakes on me all the time," she jokes.
In a February episode of Kourtney & Kim Take Miami, Rob revealed that he gained 40 pounds after going through a rough break up with Rita Ora. He then publicly announced on Twitter he was starting a diet and exercise plan in order to lose the weight. "I still have to lose like 40 to 50 pounds believe it or not," Rob told Us Weekly in May. "Six months I should be there."