Carrie Underwood and Mike Fisher Carrie Underwood and Mike Fisher

Carrie Underwood and her husband Mike Fisher welcomed a baby boy last week.

The 31-year-old singer announced the news on Twitter Tuesday, posting a picture of the baby's hand and revealing his name to be Isaiah Michael Fisher.

See more celebrity baby news

Underwood and Fisher, a forward for the Nashville Predators, were married in 2010. This is the couple's first child.