P!nk's popularity in Australia has reached phenomenal peaks.

When P!nk visits Australia, it's always a big party. But it was a special celebration when the singer played the final night of her latest Australia tour in Brisbane on Sept. 8 -- her 34th birthday.

"I've never been onstage before for my birthday," she told the crowd. "It's fun. I had cheesecake today."

The audience of some 12,000 responded with a spontaneous performance of "Happy Birthday."

It didn't stop there, as her bandmates brought out a cake.

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