Jason Aldean and his wife, Brittany Kerr, are expanding their family. They announced on social media yesterday that they're expecting their first child together. A photo posted to Instagram showed Aldean, Kerr and their two dogs sitting next to an open oven with a bun in it. She's wearing a shirt that says "Baby Mama" and he's wearing one that says "Baby Daddy." The new addition will be the first child for Kerr and the third for Aldean. He has two daughters, 14-year-old Keeley and nine-year-old Kendyl, from his first marriage.