The length of the dress in the dream will determine modesty. A short dress in Islam indicates a behavior without any shame and the non-respect of certain religious practices. But that depends, because the dream of a short dress also indicates joy or celebrations. The dream of long dress indicates modesty, elegance and serenity in a couple.
A dress torn in a dream indicates that one is the victim of false rumors or that his worst secrets will be revealed. A dress in Islam may indicate a future marriage or meeting or one that focuses on material goods by turning away from religion.