United Kingdom, Jan. 31 -- Michael Buble has hailed Catherine O'Hara as "an ambassador for Canada in the truest sense".

The acclaimed actress - who was born in Toronto, Canada - has died aged 71, and Michael has taken to social media to pay a glowing tribute to the film star.

Alongside a photo of Catherine, Michael wrote on Instagram: "Heartbroken doesn't even begin to cover it.

"Catherine O'Hara was one of a kind. A rare light in this world and her passing hits with a weight I can't fully put into words.

"She wasn't just a legendary artist, actor and comedian. She was an ambassador for Canada in the truest sense: brilliant, fearless, deeply original, and so full of humanity. She made the world laugh, but she also made people feel see...