Sep. 2, 2014 at 8:20 AM ET
Carrie Underwood let her big Labor Day news go to the dogs on Monday, enlisting beloved family pets Ace and Penny to help her announce her pregnancy on Twitter.
In a tweeted photo, Underwood sits in a comfy chair cuddling Ace, who's wearing a T-shirt that reads "I'm going to be a Big Brother" while Penny curls up nearby in her own shirt that reads "I'm going to be a Big Sister."
"Their parents couldn't be happier!" Underwood added in the tweet.
The baby's father is NHL player Mike Fisher, who married Underwood in 2010 after the pair dated for two years.
Fisher also took to Twitter to chime in about the good news.
This will be the couple's first child.