Michael Bublé shares his son's hilarious reaction to finding out he is going to be a big brother

Last month, Michael Bublé had us all very excited when he revealed he and his wife Luisana Lopilato are expecting their fourth baby together.

The Canadian crooner shared the wonderful news through his music video for his latest single, 'I’ll Never Not Love You.'

But someone who was left a little disappointed by the news was the 'Home' hitmaker's six-year-old son, Elias. 

During an appearance on The View over the weekend, the 46-year-old admitted the youngster was "distraught" when they told him he was going to be a big brother again.

Telling the hilarious story, he said: "We told the kids on Christmas Eve. And we told them, 'Mummy has a baby in her tummy. You're going to have a little brother or sister.'

"My six-year-old Eli was distraught. He said, 'Why didn't you invite us to watch when you fell in love and you made the baby?'"

He continued: "And I still — I still don't know how to answer the question. Because obviously, they have no concept about how physically it happens.

"It's really cute, it's just so sweet — they just know that mummies and daddies fall in love and have the baby so he just wants to be invited."

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Bublé and Lopilato became engaged in 2009 and were married two years later in 2011.

The couple also loving parents to son Noah, eight, and daughter Vida, three.