Joe Don Rooney and Tiffany Fallon Joe Don Rooney and Tiffany Fallon

It's a girl for Rascal Flatts guitarist Joe Don Rooney.

The country star and his wife, 2005 Playboy Playmate of the Year Tiffany Fallon, welcomed Raquel Blue Rooney on Tuesday in Nashville, his rep tells Raquel, who weighed in at 7 pounds, joins big brother Jagger, 2.

Watch Rascal Flatts music videos

"Tiffany and I are so excited to have brought a brand new baby into the world," Rooney said in a statement. "Raquel Blue is so beautiful and we feel so grateful to have this sweet little angel round out our family. Jagger is already an excited big brother; yesterday he gave her kisses and tried to feed her cookies! We feel blessed and are ready for the sleepless nights ahead."Rooney, 34, and Fallon, 36, have been married for four years.