Having said that, that is not an excuse to over pack since there is nothing more unpleasant than carrying heavy luggage around. Test the weight of your bag by walking around with it for a few minutes. Those are the questions you should ask. Coordinate your wardrobe around one or two basic colors. That will also help eliminating a bunch of clothes.
Separates are the key items to consider since they can be easily mixed and matched.
Pack carefully to avoid unnecessary creases and choose outfits less likely to wrinkle such as the ones made of synthetic fabrics. Do not forget to fasten zippers and buttons. Lingerie should be packed together, preferably in plastic bags. Slips, panties and girdles should go in thirds and rolled together to make a set. Bras should be folded in half, one cup inside the other with a pair of stockings inserted.