TULSA, Okla., Aug. 10 (UPI) -- Zac Hanson and wife Kate welcomed baby No. 4 over the weekend.
The 30-year-old musician and Kate welcomed a daughter on Saturday, Aug. 6 in Hanson's hometown of Tulsa, Okla., news outlets reported Tuesday.
"We are overjoyed to share the arrival of Mary Lucille Diana Hanson," the star said in a statement. "It is such an inspiration to meet her and to imagine all of the adventures we will take together as a family of six."
Hanson and Kate, who married in 2006, are already parents to 8-year-old John Ira Shepherd, 5-year-old Junia Rosa Ruth and 2-year-old George Abraham Walker. John, George and baby Mary go by their middle names, Shepherd, Abraham and Lucille.
Hanson and brothers Isaac and Taylor Hanson came to fame in the 1990s as the band Hanson. The trio, who are best known for the hit "MMMBop," still perform as a group and last released the album Anthem in 2013.
"We have never run from our past. We definitely still sing 'MMMBop.' When we do concerts, we still play old songs," Hanson told E! News in July. Isaac and Taylor are also parents -- to three and five children, respectively.