well. I personally do not like labels that people feel they need to stick themselves to.
right now, there is such a variety in style (like how both flats & mega high heels are fashionable. and also how skinny and boot cut jeans are both popular) so just wear whatever you think looks flatters you most, and what you like.
But, here is basically what's in style for fall:
-SWEATERS. homey-and earthy but are really high fashion if you wear them over dark skinnies.
-boots. I personally like bearpaw boots over uggs, but either are stylish.
-little flats. I personally am in love with these from coach, I wear them everyday (they are so mismatched that they go with every thing)
*eh. cannot find pictures. they are blue/red/black plaid with red/blue striped bows. you get the picture.
and these are some stores that basically have everything that is in right now:
-American Eagle
-Urban Outfitters (my favorite store EVER. if I could buy all of their hats, I would.)
-Abercrombie
-Aeropostale (not so much anymore, but you can still find cute jeans and tees)
-Hollister
^ and of course, you don't /need/ to buy clothes here because of the brand name. just go and look what is in style, and see if you can find it somewhere else for a less expensive price.