What should I bring in my college wardrobe?

Have a couple of business outfits in case of interviews. And one party outfit (you never know, you might go to a club or just out to dinner). Other than that, bring layers because DC starts to get chilly in November (or even earlier). For class, you can wear jeans and a T shirt. A simple summer dress is fine (since you like dresses), but be prepared for winter. As for shoes, just wear sneakers or other flats on a daily basis.