The video, called "Bump to Buzz", ended up getting 13 million views because it was so touching.
Well now the pair, who welcomed their second son, Buddy Bob, into the world last month, have created another time-lapse video. And this time their eldest son Buzz was involved.
The video again shows her growing bump every day of the pregnancy.
And like the last one, here's the happy family at the end.
Aww, you guys. Welcome to the world, Buddy.