Walker teased the couple's big news before they hit the red carpet, writing on Twitter, "Guess what?"

By Lindsay Kimble
April 02, 2017 08:15 PM
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Move over Little Big Town — there’s about to be a new foursome on the country scene!

Clay Walker and wife Jessica Craig are expecting their fourth child together this fall, his rep confirms to PEOPLE. They announced the news with a sweet smooch at the ACM Awards on Sunday night — posing outside of the T-Mobile Arena in Las Vegas, Walker bent down and kissed his wife’s belly.

Earlier in the evening, the singer, 47, teased the big reveal on social media, writing, “Guess what… really… guess what… you’re the first to know!” Alongside the image, Walker posted a photo with his wife.

Walker and Jessica are already parents to William, 8, Mary, 7, and Elijah, 3.

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Walker also has two children from a previous relationship: MaClay, 21, and Skylor, 17.