The ideal storage conditions for your clothes are:
- Total darkness.
- Relative humidity of 50-55% and a temperature of 12-18°C.
- Clean, well ventilated and free of pests.
- Acid - free tissue paper should be used between clothes and to line boxes or drawers.
While this may not be totally achievable in your home, perhaps you could find a way to store special, more expensive items in these conditions.