"I can proudly announce that me & the lovely @JessieBaylin are expecting our first child. I'm beyond excited/anxious. Life is beautiful."

The couple is excited about the newest member of their family, who is due in December.

Nathan's brother and band front man Caleb Followill's first child, daughter Dixie Pearl, was born last week. Nathan's other brother, bassist Jared, announced his engagement earlier this year to model Martha Patterson, sparking speculation among fans on whether Kings of Leon will take a hiatus to focus on their personal lives.