Teigen and Legend are also parents to 2-year-old daughter Luna Simone.
Model Chrissy Teigen and musician John Legend are the proud parents of a baby boy.
John spoke to PEOPLE saying that he doesn't think "Luna has a concept of exactly what it means to have a little sibling yet".
Addressing criticism on Twitter, she wrote: 'Since this is coming up again, I said our next baby would be a boy because that is the embryo we have left.
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"It feels worse for me because with IVF you know *so* early", she explained.
The loved up couple have previously been open about their struggle to conceive naturally, however, they announced the they were expecting their second baby last November, after undergoing IVF.
Chrissy previously revealed she found her second pregnancy a lot harder than her first.
John said: "Luna's gonna be an issue". She captioned the announcement video: 'It's John's!'
And, of course, congrats to John and Chrissy on their growing family! The couple married in Como, Italy on September 14, 2013.