Chrissy and John first shared the news that they were expecting their second child in a cute Instagram video last November.
The clip showed the couple's one-year-old daughter Luna pointing at her mother's growing bump and saying "baby."
Chrissy has been open about the IVF struggles the couple have faced, revealing she and John had three viable embryos to use to attempt to have children.
"The first little girl didn't work, and then the second is Luna,” she told InStyle of the three healthy and usable embryos she had extracted. The third is the couple's baby boy, yet to be born.
Congratulations to the happy family!