What should i wear to this fergie concert?

I will NOT buy tacky wal mart and target clothes everyone says i'm a scence kid. But I only dress in american eagle aeropostale and pac sun. No other places for clothes. I have blonde hair with pink and neon green and blue in it and I have nose piercing i wont take out. Dont call me a poser cause i'm not. and i will just report you if you say go shop at wal mart or other places non other then the places i listed i shop at. what would look pretty and nice at a outdoor fergie concert.