Tip 1. Mirrors should be long and vertical. You have observed that many clothing stores use such mirrors. The mirror is very narrow, only thirty or forty centimeters, but it is relatively high, more than one and a half meters.

Tip 2: Tilt the mirror. That's all that matters. This makes the mirror look thin. Have you found that the mirrors of many clothing stores are tilted?

Tip 3. Small way, put the mirror in the corner, so that the space reflected by the mirror is large and people look small. Don't pile up sundries around the mirror, it will look big and thin.