Carrie Underwood says her heart is full after the arrival of her second son.

The country superstar posted photos of herself, her husband Mike Fisher and her son Isaiah with the newborn, who she said was born early Monday. Her post states “his mom, dad and big brother couldn’t be happier for God to trust them with taking care of this little miracle.”

The seven-time Grammy winner Underwood and Fisher, a former NHL player, named him Jacob Bryan Fisher. The former ‘American Idol’ winner revealed last year that she had three miscarriages in about two years.