Carrie Underwood was quick on her feet on Monday (Jan. 20), turning out a beautiful, albeit unplanned a capella version of "America the Beautiful" at the inauguration of new president Donald J.

So who is Carrie Underwood's husband ... "Tiny hands and tiny feet...God has blessed us with an amazing gift! Welcome to the world, sweet angel," the Grammy Award-winning singer wrote on Instagram.

"Tiny hands and tiny feet...God has blessed us with an amazing gift! Isaiah Michael Fisher - born on February 27," she wrote in an Instagram caption at the time. MORE: Carrie Underwood prepares ...

When Carrie Underwood isn't performing on stage or prepping ... “Tiny hands and tiny feet...God has blessed us with an amazing gift! Isaiah Michael Fisher — born on February 27,” she ...

“I’m happy to confirm that Carrie Underwood is engaged to Mike Fisher ... “Tiny hands and tiny feet...God has blessed us with an amazing gift! Isaiah Michael Fisher - born February 27.” ...

“I’m happy to confirm that Carrie Underwood is engaged to Mike Fisher ... “Tiny hands and tiny feet...God has blessed us with an amazing gift! Isaiah Michael Fisher - born February 27.” ...

Carrie Underwood sings “America the Beautiful ... despite allegations The Massive Crocodiles that Live in Dens 40 Feet Below the Surface Chiefs QB Patrick Mahomes reacts to allegations ...

Carrie Underwood provided one of the most profound moments of Trump ... A blast of music began, and then quickly ended—like a cannon blast into a wall that was just feet in front of it. Underwood ...

Carrie Underwood is not only an eight-time Grammy ... "Tiny hands and tiny feet…" she captioned the post. "God has blessed us with an amazing gift! Isaiah Michael Fisher - born on February ...