The couple announced they were expecting a second child back in November 2017.
The celebrity power couple has officially welcomed their second child and first baby boy to the world.
"Somebody's herrrrrrre!" - Teigen tweeted on Wednesday night, announcing the baby's arrival.
As RadarOnline.com readers know, Teigen, 32, and Legend, 39, are already parents to two-year-old daughter Luna.
"Even human beings who commit heinous acts are the same species as us, not 'animals.' I'm in the hospital with our new son".
They explained: 'Luna's gonna be an issue.
No further details are known at this moment.
Chrissy and John started dating in 2007 and married in 2013.
The Legends are now a family of four! But I also know that - I'm so ready for it.
"Ours didn't work the first time, and it was devastating", she said of the experience. "A boy. So. Yeah", she wrote on Twitter, referencing the couple's use of in vitro fertilization. "She's got her little baby doll now that she's been really taking care of". Just last week Teigen expressed her frustration on what felt like the longest pregnancy in history and the mama was over it.
The baby came earlier than expected since her due date was in June. But now that he is here is Luna going to want to return her big brother?