Months later, Teigen confirmed that she was pregnant with a baby boy, which wasn't a surprise to fans of the couple.
Congrats John and Chrissy - we can't wait to see the first pictures of your lil man!
Before adding: "Wanna hold my boy let's do thisssssss'".
The couple announced they were expecting a baby boy last November after Chrissy underwent IVF treatment.
The pair welcomed a little boy on Wednesday 16 May, and the supermodel announced the happy news to her 10 million Twitter followers.
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She underwent the surgery at the Walter Reed National Military Medical Centre in Bethesda on Monday, New York Post reported. The first lady's office said in a statement that the procedure was "successful and there were no complications".
Explaining why she had reached her final tether, Chrissy said that things were more frustrating because she had known about her pregnancy for so long.
"It's John's!" she hilariously captioned a video of her baby bump.
He told People: 'Luna's gonna be an issue.
Addressing the critics on Twitter, she said: "Since this is coming up again, I said our next baby would be a boy because that is the embryo we have left".
The 32-year-old - who married the All of Me hitmaker in 2013 - previously defended the couple's decision to have a child via IVF again.