Halli Makennah Chris Lane and Lauren Bushnell Lane

And then there were three!

Chris Lane and Lauren Bushnell Lane welcomed their first baby, son Dutton Walker Lane, on Tuesday, June 8 in Nashville, Tennessee, they confirm to PEOPLE exclusively.

Born at 11:12 a.m., Dutton weighed in at 9 lbs. and measured 19.5 inches long.

“Everyone in the room, including Lauren and me, were shocked we had a 9-pound baby! Not sure where he was hiding in her belly?!” the country singer, 36, jokes to PEOPLE. On a more serious note, “Watching Lauren go through the birthing process – from the beginning to the moment she delivered – was the most incredible thing I’ve ever witnessed. I experienced an emotion I’ve never felt before.”

Adds Lauren, 31: “I’ve never felt an immediate unconditional love like I now have for Dutton. And going through this experience with Chris has made me love and appreciate him even more … I didn’t think that was possible!”

 

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