After posting it to her official website, the reality star followed up with a tweet to share the news with her millions of followers:
Saint was born on December 5 at a healthy eight pounds, one ounce. The bouncing baby boy was the result of a difficult pregnancy and was breech just a few days before he was delivered.
There is a rumor that the couple chose to also give baby Yeezus the middle name Robert in honor of Kim's late father, but this news hasn't been confirmed yet.
While many of the couple's fans were hoping for the predictable yet clever "South" — his big sister's name is North, after all — they didn't get their wish. Well, not completely at least. He does have the initials S.W., though.
Welcome to the world, Saint!
Watch: Celebrities Rewind! Kim K to Haters: 'Try It, I Dare You!' in the video below:
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(Photo: Dimitrios Kambouris/Getty Images)