Kings of Leon's Caleb Followill & Lily Aldridge Expecting Baby No. 2

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Lily Aldridge and Caleb Followill of music group Kings of Leon attend the 2016 Vanity Fair Oscar Party Hosted By Graydon Carter at the Wallis Annenberg Center for the Performing Arts on Feb. 28, 2016 in Beverly Hills, Calif.

Another child is on the way for Kings of Leon's Caleb Followill and wife Lily Aldridge.

The model announced the happy news on Sunday (Aug. 19) with a photo of her small bump and the simple caption "SURPRISE."

Many famous friends -- including Chrissy Teigen, Reese Witherspoon and Gwyneth Paltrow -- commented with messages of congratulations on the Instagram post.

Followill and Aldridge are already parents to daughter Dixie, who's now six years old. The couple wed back in 2011.

See the pregnancy reveal below.

 

------ SURPRISE------

A post shared by Lily Aldridge (@lilyaldridge) on