Michael Buble and his wife are expecting a baby boy

The `Haven`t Met You Yet` hitmaker and model Luisana Lopilato - who married in March 2011 after over two years together - were delighted to be told after a sonogram on 13.03.13 that they will be welcoming a son into their lives in August.

Michael told the New York Post newspaper: "We are so excited. We have just come from the hospital, and the sonogram was pretty clear, it`s a boy! We are thrilled."

The couple are now thinking of a list of names for their impending new arrival, but the 37-year-old singer insists the baby won`t be named after the new pope, Pope Francis I - who, like Luisana, hails from Argentina - even though the couple saw doctors shortly after he was announced as head of the Catholic church.

Michael said: "She said, `It is a sign!` But there`s no way we are going to call him Frank, even if it did work well for Frank Sinatra."

Even before they had the ultrasound test the Canadian star admitted he has been turning down several of his 25-year-old wife`s name suggestions.

He said: "She will come to me and say: `I think Dirt is a good name.`

And I will say: `Babe, Dirt in English is not as pretty as it is in Spanish.` "

sections: Celebrities