Kim Kardashian, 35, and Kanye West, 38, announced the name of their baby son on the reality star's website Monday, revealing that his name is Saint West.

They also shared that he weighed 8 lbs, 1 oz, at the time of his birth on Dec. 5.

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kim kanye north

Kim, Kanye and North.

The newborn joins big sister North West, 2, who has been very excited to meet her younger sibling.

"We talk about baby brother all the time," Kim previously shared. "She's so sweet and yesterday she said, ‘Mommy, can I give baby brother a kiss on your tummy?' and she kissed my stomach."

Congrats to the new family-of-four!