Violet Marlowe Followill was born at 4:01 p.m. and weighed in at 7 pounds, 13 ounces. "Mom, Dad and baby are doing well and are so in love!" a rep for the band told the magazine.
This is the first child for Followill, 33, and his singer-songwriter wife, 28, who announced they were expecting in June. The couple wed in November 2009.
Followill's brother, Kings of Leon frontman Caleb, welcomed daughter Dixie Pearl in June. His other brother Matthew, the band's guitarist, welcomed son Knox Cameron Patrick in May 2011.