Justin Bieber has become a dad to a baby boy, and her mother, Hailey Bieber, is said to be "doing well" after delivery her first child.

The newborn son is named Jack Blues, as a source says, he and the 27-year-old are "doing well" at home.

The newly-become parents, meanwhile, are over the moon after, "They're both overjoyed. The baby is such a miracle. He's adorable and doing well."

Prior to delivery, the couple was praying for a while to have a kid, and the moment they received the news of expecting, the insider said, they became extremely happy.

"The pregnancy was something that they very much wished and prayed for," they spilled to People. "The day they found out that Hailey was pregnant was the best ever for Justin."

"He was over the moon with excitement. It was a big celebration for them," noting, "Justin's already a great dad."

On Aug 23, Justin and Hailey announced on social media about the birth of their son. "WELCOME HOME JACK BLUES BIEBER," he penned.