Thomas Rhett adds ANOTHER baby girl to his growing family!

Congratulations go out to Thomas Rhett, wife Lauren, and their daughters Willa Gray and Ada James. They're growing their family by one new little princess!

Lauren's writes on Instagram, "We decided we didn't have enough princess dresses around the house, so we're adding another Akins baby girl to the family early next year." She also says that Willa prays for her new sister every night and that Ada loves to touch her belly and talk to the baby.

Photos accompanying the post show Lauren's precious bump and the girls giving it kisses. They also show the gender reveal, which included Thomas Rhett's dad,Rhett Akins, making the call for the baby girl, and a hilarious reaction from Thomas.