Grammy-winning singer Michael Bublé has become a father for the time after his actress wife gave birth to son Noah.

The 37-year-old crooner, who has scored global such as Haven't Met You Yet, and wife Luisana Lopilato welcomed their son in Vancouver, Canada.

Posting a picture of the trio straight from the delivery-room he announced the new birth.

"Overjoyed and filled with gratitude at the arrival of our son Noah Buble," he told his 1.7 million followers on Twitter.

His timeline was quickly flooded with congratulatory messages from fans and celebrity friends.

One Direction star Niall Horan tweeted: "Congrats to my good friends @michaelbuble @lulopilato on the birth of little baby Buble! Soo exciting! can't wait to meet the little one."

Michael Buble and wife Luisana Lopilato
Proud Parents: The singer announced their happy news by posting a picture of the newborn online.

A fan said: "Congratulations guys!! The start of the best journey in your life! Xxx."

The proud parents, who married in 2011, revealed that they were expecting in January by posting a video of the foetal ultrasound on YouTube.

Buble previously said the day he found out he was going to be a father was the 'greatest day' of his life.

In the later stages of Argentina-born Lopilato's pregnancy, he cancelled television appearances to be closer to her.

Buble's eighth studio album, To Be Loved, went straight in at number one when it was released in April.