NASHVILLE –  It's a Kings of Leon child boom.

The band's drummer Nathan Followill, 33, introduced Wednesday that he and his wife, singer Jessie Baylin, expect a baby.

"I can proudly announce that me & the stunning @JessieBaylin predict our first kid. I AM past excited/anxious. Existence is beautiful," he tweeted to fans.

Followill's more youthful brother Caleb, the group's lead singer, simply welcomed a toddler girl, Dixie Pearl. His stick insect wife, Lily Aldridge, gave start at Vanderbilt School & Clinical Heart in Nashville June 21.

Meanwhile, the more youthful Followill brother, Jared, 25, is about to quickly wed his type female friend Martha Patterson.

The pair introduced their engagement in May.