What is a good way to market to teenage girls?

I sell homecoming/evening gown/prom dresses. What is a good way to reach teenage girls and let them know my shop exists? We already advertise in local newspaper. High Schools won't allow you to pass our literature.What is a good way to market to teenage girls?
Create a myspace page for your store and find local girls by searching there highschools then ad them to your friends. This helps spread the word about your store. If you are planning on doing a lot of business you could do coolbook or a program that sends out dress catalogs to local girls (this is however expensive). You may also want to call some of the local highschools to see if they do a prom preview fashion show and see if you can participate. Or get together with SADD or another local charity and do your own fashion show. Just some ideas. Good luck this season!What is a good way to market to teenage girls?
One thing to consider is giving a discount or referral bonuses to some of the girls if they give you a plug on their myspace page... they usually get tons of their friends that visit their MS pages every day. Also, try advertising in the high school newspapers as well.
Get one girl in one of your dresses and get her to tell her friends about the store. Word of mouth is the best marketing. I'm sure a girl would be willing to wear a dress and tell the other girls about it in exchange for her own dress.
Most high schools have their own newspaper which survives on advertising. I know when my prom was coming up, I found a shop through one of the ads in the school paper. :)
Try telling other young girls to model at public functions especially for teenagers.