Baby on board!

Carrie Underwood and husband Mike Fisher are expecting their first child together -- and the country cutie revealed the news Monday on her Instagram page with one adorable announcement.

"In honor of "Labor" Day, Ace & Penny would like to make an announcement. Their parents couldn't be happier," she posted, along with a photo of her with the couple's two dogs, who are sporting t-shirts saying "I'm going to be a big brother/sister."

We independently confirmed with Carrie's rep that the two are expecting.

This is the first child for Underwood and the hockey player, who tied the knot back in 2010.

Congrats to the happy couple! 

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