Joe Don Rooney of the Rascal Flatts is now a father of three children!

The 39-year-old lead guitarist and high octave harmony singer in the country pop trio welcomed his third child, a baby girl, with wife Tiffany Fallon Monday, Sept. 29, in Nashville, Tenn., his rep confirmed to People and Us Weekly.

The newborn, whom the couple named Devon Olivia, arrived at exactly 7:01 p.m. and weighed 6 pounds, 11 ounces at birth.

She joins older siblings Raquel Blue, 4, and Jagger Donovan, 6.

"We are so thrilled to finally become a party of five," Rooney and Fallon told People. "Jagger and Raquel are so happy to be her big brother and big sister."

The musician and his wife, the second runner-up to Miss USA 2001, who tied the knot in April 2006, announced they were expecting again earlier this year. "We are so thrilled and feel so blessed to bring another little angel into our world," Rooney told Us Weekly at the time. "Jagger and Rocky are very excited, too. They're going to make a great 'big brother - big sister duo' as the Rooney circus continues."

In an August interview with Country Weekly, Rooney said that her wife does not do pregnancy very well. "She's been really sick with this one," she shared at the time. "She's starting to feel a little better; she's just in that uncomfortable stage now. But we're really excited."

"Our schedule is so crazy," Rooney added. "I have like literally a window of time from Sept. 22 through Sept. 26 off, so we're hoping [her birth] falls in that window. No pressure, Tiff!"

Rooney's newest bundle of joy arrived at a busy time for the Grammy-winning band, Billboard reported. The trio's "Rewind Tour," which is in support of their ninth studio album "Rewind," is ongoing. The tour kicked off on May 16 this year in Maryland Heights, Mo. and will close this coming Oct. 11 in Atlantic City, N.J.