The country star shared the news via an adorable Instagram photo of her pups Ace and Penny wearing t-shirts that read, "I'm going to be a big brother" and "I'm going to be a big sister." For the caption, she wrote, "In honor of 'Labor' Day, Ace & Penny would like to make an announcement. Their parents couldn't be happier..."
Congratulations, Carrie and Mike!
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Photo of Carrie Underwood courtesy of Carrie Underwood via Instagram