I wear whatever's comfortable and suited to the weather. They keep the doors at all sides of the mall open, so that it gets air in the summer, but in the winter it's freezing.
I usually wear just jeans and a tshirt with a jacket. No need to dress up for me; I'm a casual.
Besides, I don't actually go clothes shopping unless its for sporty shoes, which I haven't done since fourth grade. I usually look for videogames or books, or random good smelling stuff from Bath and Bodyworks.