04/02/2015 02:02 pm ET | Updated Apr 02, 2015

Kourtney Kardashian Shares First Photo Of Baby Reign

David Becker via Getty Images

Worth the wait!

Kourtney Kardashian welcomed her third child, Reign Aston Disick, back in December 2014, but we hadn't seen any photos of him, aside from one of his tiny little hands. On Thursday, the eldest Kardashian sister finally shared a snapshot of her newest addition, and he's even cuter than we imagined:

My little turtle dove angel baby boy Reign Aston Disick.

A photo posted by Kourtney Kardashian (@kourtneykardash) on

Kardashian and her longtime boyfriend, Scott Disick, are also the proud parents of son Mason, 5, and daughter Penelope, 2.

Celebrity Babies 2015