"Little Indy Hanson has arrived," Taylor wrote next to a sleeping snap of the newborn. Natalie also shared a sweet photo of her baby wearing a burnt orange shirt and holding his tiny hands, writing, "Claude Indiana Emmanuel Hanson welcomed with love 12.26.18 ?."
Little Indy was born in Tulsa, Oklahoma, Taylor's rep tells ET, alongside a statement from the couple: "Our new little man, Indy, is the best gift our family could imagine. His arrival brings with it a new sense of adventure and excitement for the future."
Taylor and Natalie are also parents to two daughters -- Penelope “Penny” Anne, 13, and Wilhelmina “Willa” Jane, 6 -- and three sons -- Jordan Ezra, 16, River Samuel, 12, and Viggo Moriah, 10.
The "Penny & Me" singer announced that they were expecting their sixth child back in August. "What’s better than being a dad of five? Perhaps being a dad of six. Baby Hanson coming in December and we are over the moon. @nataliehanson," he wrote alongside a family pic.
“I think there’s certain abilities you can see in kids,” Zac mused, contemplating whether he expects any of their kids to pursue a musical career. “Taylor’s kids are the oldest, but you can see there’s creativity and musicality. It’s still a big question mark if that’s something they will choose.”