The slip dress is a prized fashion piece that has been trending since the 90's. This quintessential piece consists of a satin or silk sheath, usually with spaghetti straps, which you can wear underneath other layers. When it comes to styling a slip dress, your options are endless. They are the ultimate layering pieces, and you can wear them underneath a chunky knit, a floor-length coat or even a ski jacket. In warmer weather, you can wear your slip dress by itself and let your footwear dictate the personality of your outfit. Go back to the 90s with a simple strappy sandal, or you can combine your slip dress with knee-high boots to create an authentic street style. If you want to wear your slip dress to work, add a simple blazer and court shoes and you're good to go.