"My little turtle dove angel baby boy Reign Aston Disick," she captioned the highly-anticipated photo. Prior to this, she had only teased us with this pic where he was hidden under a blanket while sister Penelope Disick played next to him.
Reign is the third child for Kourtney and Scott and he shares a birthday with big brother Mason Dash Disick, which we think is kinda cool.
Kourt's pregnancy is chronicled on the current season of Keeping Up With The Kardashians and fortunately for Kourt, it was another easy pregnancy.
"I love being pregnant in general," she told DuJour magazine in December. "I'm at my best when I'm pregnant. It's such an amazing feeling, the transformation that your body goes through."
She also put that beautiful transformation on full display when she posed naked for photos that appeared in the issue.
As for having another child, Kourtney reportedly said she totally would, but said it was up to Scott, who (at this point) told E! News "probably not," but hey, you never know!