Word of warning, there were no "locked" storage, just some cubbies, that you put your stuff in, and they lock that room before the test begins. As for the clothing... for women its okay to wear dresses, skirts/shirts, or pant/shrits. But I would recommend pants, just because, unless the skirt/dress is long, it looks like your not wearing anything other than your labcoat. When I took the exam all the women except one, wore pants. The main idea is to look professional. Good luck, its not that bad.