Nathan Followill and Jessie Baylin Expecting First Child

Nathan Followill and his wife, singer/songwriter Jessie Baylin, are expecting their first child in December, the band's rep confirms to PEOPLE.

It’s a Kings of Leon baby boom!

Nathan Followill and his wife, singer/songwriter Jessie Baylin, are expecting their first child in December, the band’s rep confirms to PEOPLE.

“I’m beyond excited/anxious. Life is beautiful,” the drummer, 33, writes on Twitter.

Followill wed Baylin, 28, in November 2009 in Brentwood, Tenn.

It’s been a big year for the Followill family — brother Caleb wed Lily Aldridge in May 2011 and the couple welcomed daughter Dixie Pearl on Thursday; brother Jared became engaged to Martha Patterson in May; and cousin Matthew welcomed son Knox Cameron Patrick last April.

— Sarah Michaud with reporting by Kevin O’Donnell