The singer announced the happy news via Instagram, accompanied by an adorable picture of the new family- with new mum Luisana looking particularly stunning.
The singer added the caption:
'Overjoyed and filled with gratitude at the arrival of our son Noah Buble. Born this morning, August 27th at 2:26 am in Vancouver, Canada.'
The It's a Beautiful Day singer and Luisana, 26, have been anticipating the birth for some time, with the 37-year-old even cancelling an appearance on the Today Show at the start of the month.
He revealed at the time:
'It’s a boy, and he’s due at any moment. Literally any moment. We’re close. She had a false alarm a couple days ago, and she had about seven hours of labor. So we know that it could happen at any time.'
Michael, who has admitted the happiest day of his life was when he found out Argentinian model Luisana was pregnant with his first child, previously admitted:
'I'm about 15 to 20 minutes away from home. Just in case anything happens, I'm there.
'It's scary for her. She's in a country that's not her country, people are speaking a language that's not her first language.
'So, you know, I've got her whole family here so there's a good support system.'
Aw, congratulations guys.