(CNN) Carrie Underwood is now a mom of two.

The superstar singer and husband, Mike Fisher, welcomed a son on Monday.

"Jacob Bryan Fisher entered the world in the wee hours of the morning on Monday," Underwood wrote on social media. "His mom, dad and big brother couldn't be happier for God to trust them with taking care of this little miracle! Our hearts are full, our eyes are tired and our lives are forever changed. Life is good."

Jacob Bryan Fisher entered the world in the wee hours of the morning on Monday...his mom, dad and big brother couldn't be happier for God to trust them with taking care of this little miracle! Our hearts are full, our eyes are tired and our lives are forever changed. Life is good pic.twitter.com/Fa2wPbicVe — Carrie Underwood (@carrieunderwood) January 23, 2019

Underwood gave birth to her first son in 2015.

The couple's new addition comes just months before the Grammy-winner is scheduled to begin her Cry Pretty 360 tour, which is set to kick off May 1.

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