Christian country singer Carrie Underwood finally gave birth to her son and she is simply in awe of her new bundle of joy.

She shared a photo of her baby's hand on her Instagram account (@carrieunderwood) and captioned it, "Tiny hands and tiny feet...God has blessed us with an amazing gift! Isaiah Michael Fisher - born on February 27. Welcome to the world, sweet angel!"

Underwood and NHL player husband Mike Fisher have kept their son's name under wraps as news about their first baby escalated to an all time high. The singer earlier admitted that it was difficult deciding on a name because they wanted different things.

"He keeps trying to push the name 'Bo' for our little guy," she told US 99.5 during a radio interview. "I just won't have it. Bo Fisher? I don't know. I don't like it. He thinks of it like a bow and arrow."

But the Christian couple seem very happy picking a Biblical name for their son. Isaiah is a Hebrew name meaning "Yahweh is Salvation."

Isaiah was a major prophet of the Old Testament who prophesised that the people of Israel would be exiled from their homeland but that God would lead them back eventually. He lived around 8th century BC and was documented in the Book of Isaiah.

Aside from the name, Underwood and Fisher apparently bumped heads when it came to the baby's room decoration. Fisher wanted a bed that looked like a car for their baby, but Underwood insisted on getting a crib.

"It's really overwhelming to go into any baby store," admitted Underwood. "The first time I went, I made Mike go with me because I knew it was overwhelming, and I wanted him to see it all and take it all in. Because there's so much stuff, so many things, and there's really no help. So it's been interesting. It's been a challenge."