Kourtney Kardashian is one hot mama! The pregnant Keeping Up With the Kardashians star and some gal pals had some fun in the sun Sunday afternoon, and Kourt could not have looked any cuter as she showed off her growing baby bump in a tiny bikini! When things got too hot for Kourt and her posse, the ladies leaped into the pool. A stealth photographer was able to capture the swimsuit-wearing beauties mid-air—including Mason and Penelope's mama with her arms in the air and a huge smile on her face!