Thomas Rhett: How He And His Wife Found Out About Girl #4

When Thomas Rhett and his wife Lauren found out that they were having another baby, the couple were on a ski trip in Colorado for Thomas's birthday in March.

Rhett told People, "We were on a ski lift and my wife kept saying that she was just feeling nauseous and somehow I convinced her it was from her face being burnt. I was like, 'Maybe it's just sun poisoning.' Or, 'Maybe it's this.' And she was like, 'I don't know, this feels kind of different.' "

He then joked with her that she may be pregnant, he recalls, "She was like, 'There's no way I'm pregnant.' And I was like, 'Well, there's definitely a way.' And we went and got a pregnancy test and literally within 15 seconds, there were two pink lines on the pregnancy test."

Thomas added that they "couldn't even wait to tell our family" and called them from Colorado to share the exciting surprise.

Rhett said that he's ready to be a girl dad. "I feel like I've got the ropes down as to what that looks like, being a dad to a girl. So when I found out we were having a fourth, I was like, well, we've already got the clothes, I know how to do this. My girls are my whole world and there truly is nothing more special than being a dad of beautiful little girls and something that I take a lot of pride in. It's going to be a wild and chaotic next 25 years, but I'm ready to embrace it."

The couple now has three daughters Lennon Love, 14 months, Ada James, 3½, and Willa Gray, 5.