Since art has existed artists have drawn on the past to create their masterpieces. Some paint, some draw, some create statues and some re-create the clothing.
Around the world today there are artists working on showing a past fashion through the construction of a garment. Sometimes this is the reproduction of a surviving garment down to the thread count, sometimes they are simply trying to grasp the look of the period using modern techniques and materials and mostly they fall somewhere in between.
Creating past fashion isnt easy. First you have to figure out what was worn. Sometimes this isnt too hard, you look at some photos, some surviving garments, you read some books, you talk to some people. Sometimes it is very hard, perhaps there arent any surviving garments and maybe the art of the time doesnt show what real people actually wore. Sometimes all the information is in a language you don