Kourtney Kardashian Credit: Allen Berezovsky/Getty Images

Kourtney Kardashian really tried to avoid having her sons with ex-boyfriend Scott Disick, Mason, and Reign, share the same December 14 birthdate. In a new blog post published on Monday, the mom of three explained that it was out of her control.

“It is still crazy to me that I have two boys born on the same exact day,” Kardashian, 36, shared. “I really tried to not have it happen, so they could each have their day, but there was no way around it. It is truly so special and meant to be. Happy birthday to the coolest and sweetest boys I know!!!”

Mason turned 6 on Monday while his little brother, Reign, turned the big 12 months.

“Happy Birthday to my sweet boys who forever changed my heart! I still can't believe they have the same birthday,” the Keeping Up With the Kardashians star also shared on Instagram, along with an adorable photo of Mason and Reign hugging.

Over the weekend, the reality personality celebrated her boys’ day with a game of alien laser tag and an outdoor movie. Kardashian and Disick are also the parents of daughter Penelope, 3. 

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