5000 people helped the teen queen celebrate seven weeks early -- some at $250 a pop!

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We're happy to report that unlike some other 16-year-old partiers, namely those of "My Super Sweet 16" on MTV fame, the superstar's seemingly over-the-top celebration was actually for charity. Thousands gathered and some paid $250 to watch Miley Cyrus perform four songs. Dad Billy Ray and Miley's rumored boyfriend, Justin Gaston, performed his classic "Achy Breaky Heart." The massive event shut down Disneyland -- and partygoers were able to enjoy the rides (we hope with shorter lines). The event was to raise funds for Youth Service America. Rumored frenemy Demi Lovato and David Archuleta were among the other celebs in attendance.

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