40 top earners under 40: No. 1?

B.O. avg $69.3 million
Age 17
Lead roles 3
B.O. cume $207.9 million

We all knew Hannah Montana attracted legions of tweens, but when Cyrus dropped the blond wig and dance numbers for The Last Song ($63 million), she proved true box office viability.

* Figures as of Sept. 23, 2010 from films released before Sept. 1

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