The American Idol alum announced her pregnancy Monday with an adorable photo of herself and her two dogs on Instagram. "In honor of 'Labor' Day, Ace & Penny would like to make an announcement. Their parents couldn't be happier...," she captioned the picture, in which her dogs are wearing matching "I'm going to be a big brother" and "I'm going to be a big sister" T-shirts.
Added Fisher, via Twitter: "We haven't picked names yet but it's looking like Fly is gonna fly. #boyorgirl #flyfisher."
Underwood, 31, and Fisher, 34, have been married since 2010. This will be the first child for the couple.
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