Charles Kelley has become a father for the second time

A representative for Charles told People magazine: "Our little miracle Archer Lancaster Kelley arrived at 11:14 am on Sept. 16 and we are absolutely in love.

"We are so thankful to get to be his mom and dad, and to share the joy with his big brother, Ward, who is over the moon!"

The couple - who also have nine-year-old son Ward - shared a picture of of them beaming while Cassie held her little bundle of joy.

Cassie also took to her Instagram Stories and posted a picture of her newborn.

She captioned the post: "Yall he is the sweetest in the world (sic)."

The couple - who married in 2009 - also showed Ward's reaction to becoming a big brother, with the youngster jumping for joy in one clip, and holding his new sibling in another.

The caption read: "Big brother is in HEAVEN (sic)."

Cassie also posted a picture of their immediate reaction to the birth, with her and Charles seen smiling ear-to-ear.

They wrote: "And this was our first reaction (sic). The wonder and awe and blessing in this moment is something I'll never forget. So much joy and gratitude!"

In March, Charles and Cassie announced they were expecting baby number two.

Taking to Instagram, Cassie posted a selection of photos with her husband and Ward, revealing her baby bump.

She captioned the post: "Biggest surprise of our lives! Baby Kelley coming early fall 2025 (sic). Big brother is the MOST excited!"

Along the way, Cassie shared plenty of updates about her pregnancy, including earlier this month when she posted footage of her baby brunch.

Cassie also shared other photos from her pregnancy, where she could be seen posing by the pool on her family European vacation.

She wrote: "The summer I spent carrying you All over the world, with friends, with family, with ocean breezes and cityscapes, celebrating and grieving, sharing laughter and long stories.

"But no matter where i was or who i was with ... I was always with you, buddy. Can't wait for you to be here and I'll never forget our summer together (and all of our outfits haha)."