The couple are already parents to daughter Luna, aged two, and previously revealed they were expecting a son.
The baby's arrival comes just a week after Teigen declared she was over being pregnant.
Ford resuming F-150 truck production on Friday after supplier fire
In between, the Ford team received a United Kingdom import license for the die - a mere two hours before the plane touched down. Dearborn-based Ford put together a team that refurbished and relocated tooling needed to make parts for the vehicles.
Teigen discussed her past struggle with infertility in 2015 on her now canceled daytime talk show, FABLife.
She wrote: "Happy pregnant Chrissy is gone. meet OVER IT Chrissy". "Wanna hold my boy let's do thisssssss".
She added: "It feels worse for me because with IVF you know *so* early".
Congrats, Chrissy and John!