well, it really varies from industry to industry. the best thing to do is to err on the side of conservative until you get the lay of the land, by observing your coworkers. and a little black dress will go over well anywhere! but a few tips apply to all industries, in my opinion: no bandage items (dresses! skirts) during the day, unless you’re a waitress or work at Tao; no flip-flops (that slap, slap, slap sound as you walk—not so professional); no belly shirts with low-slung/hipster jeans (unless you’re a model); no booty shorts. if you wonder to yourself “is this appropriate?” it’s probably not!