Carrie Underwood Pregnant

Carrie Underwood is pregnant! The 31-year-old superstar and husband Mike Fisher announced Monday (Sept. 1) they are expecting a baby, with an assist from their two furry children.

It will the first child for Underwood and her husband of four years. "In honor of "Labor" Day, Ace & Penny would like to make an announcement," she wrote on social media, sharing a photo of Ace and Penny in Big Brother and Big Sister shirts.

Adds Underwood, "Their parents couldn't be happier..."

The 'Blown Away' singer has always left the door open for children, but never spoke with much urgency about starting a family. It's not clear how far along she is, but judging from a picture she posted on Instagram over the weekend with no noticeable bump, the baby will surely be born in 2015.

Will Carrie Underwood's Baby Look Like She Did as a Kid?