I want to ask you how such a smooth dress is made.

First of all, the material of clothes is smooth cloth, which naturally makes it easier to shoot this reflective effect than other clothes.

So if it is a general shooting, in fact, the lighting need not be too deliberate, as long as you choose a bright place. If you want a better effect, you can brighten the whole picture with PS afterwards, and the luster will naturally appear.

If you want to take a good picture, you can go to the studio to make a light source, use a photographic lamp and a reflector, so that you can also take a very shiny and textured photo.