Kourtney Kardashian introduces son Reign with first cute photo

Kourtney Kardashian has shared the first, and might we add -- adorable - photo of her baby boy, Reign.

The reality TV star and her longtime beau, Scott Disick, welcomed the third child in December. And now we're getting a first look at him.

"My little turtle dove angel baby boy Reign Aston Disick," she captioned the Instagram post.

It's the third child for Kardashian, 35, and Scott Disick, 31. The couple are already parents to Mason and Penelope.

The Kardashians, meanwhile, are getting another E! TV series spinoff. Called "Dash Dolls," the series will chronicle the happenings at the sisters' boutique.