Welcome to the world Isaiah Michael Fisher!

Carrie Underwood and husband Mike Fisher welcomed their first child, a son, Feb. 27. The country singer shared the news with her fans on Twitter on Tuesday.

The couple of five years announced they were expecting on Sept. 1, 2014. The "Something in the Water" singer has been vocal about getting back in shape after giving birth.

"I'm looking forward to reclaiming my body," the Oklahoma native told People in February. "I've been saying it's been on loan for the past many months."

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