Zac Hanson got an early holiday present on Wednesday, Dec. 15 – and it was exactly what he was hoping for.

The Hanson drummer and his wife Kate welcomed their second child, daughter Junia Rosa Ruth, who arrived at 8 lbs., 7 oz.

“We couldn’t imagine a better Christmas gift than this sweet little girl,” Hanson, 25, tells PEOPLE exclusively.

“In just the short time she’s been here, she’s enriched our family and our lives beyond measure,” he adds. “We’re looking forward to celebrating the season with our family and introducing her to everyone.”

Baby Junia joins brother Shepherd, 2½, and a half-dozen cousins ranging from age 2 to 8: Zac’s brother and bandmate Taylor has four kids while Isaac has two.