What are the odds that two of Kourtney Kardashian's children [1] were born on the exact same day? Mason and Reign Disick both turned 6 years old and 1 year old, respectively, on Monday, and mom Kourtney couldn't help but give her boys an adorable Instagram shout-out to mark the occasion. In a photo showing big brother Mason hugging Reign, she wrote, "Happy Birthday to my sweet boys who forever changed my heart! I still can't believe they have the same birthday." See the sweet snap below, then check out how the Kardashian-Jenner clan celebrated Thanksgiving [2] this year!

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