The term “haute couture” is French. Haute means “high”. Couture literally means “sewing”. Clothes that are considered haute couture require hundreds hours of work, including elaborate embellishments and finishes. Also, haute couture dresses and outfits are made to the measures of the client. Not only do women wearing haute couture look like the outfit has been made on them and is absolutely unique. It also has the advantage that you normally avoid seeing anybody else in the same dress.
If you want more details discover our full article about Haute Couture.