14TH BIRTHDAY PARTY!

I really want to have a huge birthday party this year.
I`m kind of an outcast at my small private school, but there`s always time for change, no?
I want to do something totally fun, but not cheesy or seeming like it was made up by my parents.
Some people at my school are pretty judgemental and I don`t want to have a reputation this year of being the girl with the lame party.

My birthday`s in September, so if anyone can help me, that would be awesome!

I`m looking for themes, games, and plain IDEAS!
It`s boy-girl, so hopefully that can give you something to work with. Thanks!