In a selfie video, she posed in a black jacket and black leggings with the bump clearly visible.
On Thursday, a source close to the couple confirmed to CNN that Teigen and Legend were expecting.
They are already the parents of daughter, Luna, 4 years old and son, Miles, 2.
Speculation began after the family appeared together in the music video for Legend and Gary Clark Jr.’s new song, “Wild.”
The legend is seen embracing his wife from behind as they cradle her little baby.
Teigen has been outspoken in the past about the couple struggling with infertility.
“Once we talked about IVF, it was like listening to everything,” she said. “Some people who are close to us had done it, like, seven to ten times.”
The model and foodie met Legend in the group of one of his music videos in 2006. They dated for several years before getting married in Italy in 2013.
Both are known for being one of the most beloved couples on social media.
“It was a sad existence. There were no high levels. It was a straight line of life for a few months,” she said. “You hear these horrible stories of people not seeing their child as their own, or wanting to hurt them, and I never felt that way. That’s why I stopped checking on him. for I hated myself, and not my child. “
Teigen said she was less worried about this after Miles was born because by then she knew the signs to look for.