"And then there were 5", he wrote with the hashtag #BlessedBeyondBelief.
"10 attractive toes and 10 lovely fingers all accounted for, and big momma is doing great", he shares.
He's here! Chip and Joanna's new son has officially arrived!
In March, the HGTV stars announced they were expecting a baby boy.
No word on baby boy's name, but we're so excited for the Gaines' crew! "It was a total surprise", Joanna told People. "I had four kids aged four and under", she says.
According to an insider close to Chip and Joanna, "this is their last child, and they're not looking to have more".
"Even though they could easily afford another one, considering they've made so much money with their businesses and TV shows, they're just not interested in a sixth child".
Congrats to the entire Gaines family!