Daughter Joni Mason Brown was born at home on Wednesday morning, Feb. 2 outside of Atlanta, Ga., the country crooner, 32, announced via his Web site. She weighed in at 7 lbs., 14 oz.
Joni joins her three older sisters Justice, 4, Lucy, 2½, and Georgia Sloan, 16 months.
"We're just gonna keep on going until we get a boy,” Brown, who is one of 12 children himself, recently told The Boot.
"If that's 13, then I doubt I'm gonna be able to pull that off, but we'll see."