The social media site's CEO revealed that he and his lady love had been trying to have a child for a few years, but tragically had three miscarriages along the way.
So, what's the little one's precious name?
We guess the couple took a cue fromJessica Simpson, because they named their adorable daughter Max! Woot!
But wait, the good times don't end there! The new parents penned an EPIC and insanely long letter addressed to their new addition.
Essentially, the message encapsulated all of Mark's hopes for a better world and society. Let's just say it's INTENSE. Oh, and it also included the fact that Zuck will be giving away "99% of our Facebook shares — currently about $45 billion — during our lives to join many others in improving this world for the next generation."
Check out the novel HERE! And the first photo of Max (below)!