What Not To Wear-summer school edition

So I'm in my graduate course and I find it interesting that because it is summer, teachers totally change their wardrobes. I don't mean the teacher of my class, I mean the fellow teachers sitting around me taking the class. During the year, when I see them, they look uber-polished and professional with their Jcrew, Bebe, uber-tailored but sheek outfits, carrying their fendi/gucci briefcases in Jimmy choo pumps (and since when can you teach in pumps anyway)? Then, I see them this summer, and they look like my tan, eighteen year old beach bunny cousin in their short shorts, Hollister tees and windswept hair. No makeup. No attempt to look presentable. I almost feel too dressed up. Maybe it has something to do with playing roles. Teachers are adult-like professionals, summer they get to put on their student/kid cap?
I dont' know, maybe these are just a grown up version of the Abercrombie surf bitches I grew up with, and I'm sitting in the corner, head in my hands, intimidated, because I know if I was walking around with damp hair, no makeup, in t shirts and shorts I wouldn't look "cute and natural". I'd look like a hot mess. And maybe I'm angry about that. Why do skinny bitches always seem to win the day? I'll never know.