At my "burg" (in the mountains of MD) you only dressed up if it was a crush party or formal. Otherwise it was jeans and shirts, most likely sweatshirts. It was freakin freezing there most of the time. The one thing we rarely wanted to wear though were coats. You didn't want your coat (the most important item at school) to get beer spilled on it or cig. burns because you needed it for the next day for classes. LOL. We always froze our tushies off running to parties but it was better than trying to find a safe place to stash it while you were there.
We also NEVER brought purses. I don't think I used mine once at school. For classed you stuffed your ID and keys in your backpack, and for parties you took the one key you needed off the ring, put your ID in your back pocket with your money and if you could throw in your lipstick somewhere, that was great. Back in the early 90's cell phones weren't carried around or owned for that matter..they were practically as big as a purse.
As for dressing for parties these days, it doesn't matter where you go to school, or what kind of body you have or how sexy you want to feel...MORE is less...leave something for the imagination. Sheez