And it's none other than his ex wife Kris Jenner!
According to a source:
[Image via WENN.]
We're so excited about Dax Shepard and Kristen Bell's newest addition to their family: Delta Bell Shepard!
However, the delivery of Delta sounds like the most grueling birth we've ever heard of!
While dishing with Ellen DeGeneres, Dax recounted Kristen's harrowing 33-hour birth-a-thon, and how ultimately she needed a C-section.
Trust us, you're going to want to watch every last bit of what he had to say (below):
Kristen Bell and Dax Shepherd are the cutest, most fun loving couple.
It seems like they're always having so much fun together, even if it's just them and their dogs, kicking it around their house.
We weren't surprised to find out that they all had matching red and green Christmas onesie pajamas.
Even their dogs got in on it!!
Dax posted an adorbz pic (above) and wrote: