Chrissy captioned the photo, "It's John's!"
The 31-year-old debuted her new look on Instagram on Tuesday.
"It's John's!" Teigen hilariously captioned the video, referring, of course, to her hubby, Grammy victor John Legend.
"Baby!" Luna answers. The family cheers in the background. For the caption of the video, she wrote, "It's John's!" People think it happens so easily, but the stars really have to align to have a baby, and it is a little miracle. Though, it was actually big sister-to-be Luna Simone Stephens who got to break the news.
In case there was any doubt, the amusing gal captioned the clip: 'it's john's!'
State troopers encourage safe driving during Thanksgiving holiday
The 2017 Thanksgiving holiday reporting period begins Wednesday at 12 a.m. and ends Sunday at 11:59 p.m. There will be more traffic on the roads for Thanksgiving as well.
"Maury will have the final word on this", Legend jokingly replied in the comments. The model just debuted a new holiday hairstyle, right after her pregnancy announcement.
Both Chrissy and John have been open about the fact that they struggled to conceive in the past, finally having Luna after several rounds of IVF treatment.
"We would have had kids five, six years ago if it happened", said Chrissy Teigen. She quickly clarified that she meant the "rest of my fertile life". For us, it's hard because he's on the road so much and I'm working. She told writer Christopher Bagley that she and Legend started with 20 embryos, but that number dropped to three because they had to find out what was "going to be good for [her] body".