Joe Don Rooney of Rascal Flatts has confirmed his wife Tiffany Fallon is pregnant with the couple’s third child!

The guitarist made it official Monday night (March 31), telling People they're pumped to add to the family. “Jagger and Rocky are very excited too,” he says. “They’re going to make a great ‘big brother-big sister duo’ as the Rooney circus continues.”

Jagger is the couple’s oldest at five years old. Raquel Blue was born to in 2010. The third baby is expected late this summer.

Flatts’ bassist Jay DeMarcus first spilled the news on Twitter Sunday night, tweeting “Congrats to my brother @JoeDonRooney I'm proud to be an uncle again!!! @Tiffallon love you guys!!!”

The country trio begins their Rewind Tour on Friday in Las Vegas. A new album is expected this year as well.