Dry cleaning: We advice dry cleaning only for your dresses to keep them in a good shape. Do not wash it in the washing machine. This can damage it.
Garment bag : Store your dress properly in a garment bag so that it does not get damaged between the other clothes. Hang it with a wooden clothes hanger so that it keeps its shape.
Adjustments: You can easily have your dress adjusted by a local seamstress. It won't affect the fabric or design.