Critics have assailed Britney Spears’ lip-synching during concerts during her Circus tour of Australia. Fortunately, a knight in shining armor is riding to her rescue:

Michael Buble.

The hot Canadian crooner, also in Australia to promote his album Crazy Love, told Melbourne’s Herald Sun that he can’t believe the vilification of Spears.

“You’d think she killed someone,” he said.

“Okay, she lip-synchs her show, people know that, they make the decision if they want to go and see her do that. People need to lighten up a bit.”

Buble added in his passionate defense of Britney Spears, “Does she deserve the way she’s been completely bashed by the media here? No.”

One report Spears’ camp objected to: that Australian fans were so unhappy with her concerts that they walked out of at least one Circus show in droves.

That’s not true, her management says, claiming that it is only one or a handful of Australian critics making this a story and Britney Nation is thrilled.

As for Buble, he’s firmly in her corner – and he can even relate. “Mind you, I lip-synch all my concerts,” he said, joking. “I’m the Milli Vanilli of jazz.”

Michael Buble also discussed one blip in his relationship with his girlfriend, Argentine actress Luisana Lopilato, 22, a star in her native South America:

“My Spanish is not great. I’m learning slowly. She’s showing me up. Her English is flawless, I sound like a caveman when I try to talk Spanish.”