I've lived in New Orleans my entire life. The style down here is pretty casual, but conservative and comfy. No one dresses up for class at LSU unless its for a presentation or they have to work later on.
Lots of girls have the Kate Spade Sam bag, but others have never heard of her! Mignon Faget jewelry is our alternative to Tiffany's.
For makeup, I usually just wear Clinque's Oil-Free foundation year round. Its pretty light and doesn't feel all nasty in the heat. Clean hair is all you need to deal with the heat - humidity makes hair greasy in no time. Claw clips are a lifesaver at times
Threaded Mode