Today is a special day in the Bublé household after the pair, who already have two-year-old Noah together, welcomed their second son.

Beaming with joy, the celebrity couple took to social media to share their exciting news.

The Canadian crooner (and let's face it, all-round romantic) shared a picture of his wife, Luisana cradling the newborn.

He wrote: "And then there were 4. Introducing Noah's little brother Elias Bublé #family #blessed #brothers."

Back in July, the couple announced that they were having another baby with an adorable video where little Noah can be seen inspecting his mummy's tummy.

In October, the doting dad revealed they were expecting a bouncing baby boy.

At the time he said: "Noah’s two and I already miss him when he was a baby. We love that part so much that how can we not want to have that again?

"And again, and again... I'm saying that now, let's see what I say after two."

What do you think of Bublé's baby name? Let us know on Facebook and Twitter (@CloserOnline)