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She's a mom again! Kourtney Kardashian gave birth to her third child with boyfriend Scott Disick, a son, on Dec. 14, E! and Us Weekly are reporting.

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Making the news even more special? The little boy arrived on his big brother Mason Disick's fifth birthday. "The family is freaking out with joy," a source told E! News. "What an amazing coincidence."

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The news that Kourtney and Scott were expecting again broke in June. The couple, who are also parents to daughter Penelope, 2, revealed the gender of their third child on the Dec. 7 episode of "Kourtney & Khloe Take the Hamptons."

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"We're having a boy," Scott said. Added Kourtney: "I am so happy that we're having a boy. It's going to be perfect for our family."