Jason Aldean and Brittany Kerr are going to be parents again! The couple is expecting their second child, only seven months after welcoming their son Memphis. The country singer announced the exciting news by sharing an adorable picture of their 7-month-old wearing a "Big Brother" onesie, writing, "Sup everybody . . . guess who is gonna be a BIG brother! #thisdude #aldeanpartyof6" This will be the fourth child for Jason who is also a dad to daughters, Keeley, 15, and Kendyl, 10, from a previous marriage. Congrats to the couple on their growing family!