The youngest Hanson brother, 27, and his wife Kate welcomed son George Abraham Walker Hanson on Thursday, 17 October.
Zac and Kate kept the birth to themselves for a while before confirming their happy news to People on Thursday evening (24 October).
Musician Zac said Abraham weighed 8lbs 7oz and is doing well. He added that the family are delighted about the new arrival.
Abraham joins the couple's other children Shepherd, 5, and Junia, 2.
Zac – who was only 11 when Hanson burst into our lives with 'MmmBop' - announced Kate's pregnancy back in May.
"We are so happy and thankful to add more life and love to our family!" they said in a statement. "It's fun this time to watch the little ones so excitedly anticipating their new sibling."
Little Abraham is the TENTH child to join the Hanson clan. Yep, the tenth!
Zac's eldest brother Isaac is a dad of two, while middle brother Taylor welcomed his fifth child earlier this year. There will be no shortage of pals to play with in this family!
Congrats to Zac and Kate!
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