How to get skinny FAST!!!?? (for a teenage girl)?

Alright, so im 13 years old and I weight about 130 lbs. I consider myself not to be "fat" but I know im not skinny either. I need any tips, tricks, or advice that can get me a thin, hot, FLAT tummy in about a month or less. I also have a trip on may the 19th (2009) on which I’ll be going to a party with many people my age, and i really, really want to be thinner and weigh much less then i do right now. If it helps i am 5′6 (tall, i know)

I can’t get any diet pills or surgery, but if you have any eating or exersize tips that would be a life saver!!
( I also want to get down to about 105-110)

I thank anyone who will take the time to help me out it is very important to me to become thin FAST <3

and please no comments telling me this is stupid or I have an eating disorder, because I dont…and It’s not like im skinny now, so me wanting to shed some pounds is no big deal!