There are two basic ways of storing your prom dress. One is to fold it carefully in tissue paper and store it in a box with a few cedar balls and/or a few fabric softener sheets. OR you can fold it over a hanger at the waist (back side over the hanger) and place it inside a garment bag.
Remember, this is a long, heavy dress. Hanging your gown up by the shoulders or straps may cause stretching of the straps or the fabric in the shoulders. You can also hang up your gown by the straps and ribbons and then drape the rest of the dress over another hanger-at about the knees. This will also prevent stretching. Personally, I take no chances. I fold my all dresses.
Coming Out of Storage
You'll need to bring the gown or prom dress out of storage several days before your event. There are several methods for removing wrinkles and restoring freshness.
One is to hang the dress in the bathroom while a hot shower steams the wrinkles from the dress. I prefer this method to using hand steamers. Hand steamers require a little bit of salt in the water to make them work properly. Salt is very corrosive and can damage the fabric over time.
Another way to remove wrinkles is to liberally mist the dress with a mixture of water that contains a splash of fabric softener. Then hang the dress up somewhere out of the way. Allow the water and the weight of the dress to slowly remove the wrinkles. This is not the best approach for silk or satin.
Some dresses just have to be ironed-silk, satin, etc. Ironing with steam is acceptable if you don't use any salt. But be very careful---some fabrics will change color slightly when ironed with steam--especially those that are of a lighter shade. So test a small portion first. This is typically not a problem for black dresses. For extra protection you can place a piece of unprinted grocery sack between the dress and the iron.
After the Party
The day after the party use a warm washcloth to remove and deodorant stains under the arms. You really want to do this as soon as possible as some deodorants can lighten or discolor fabric over time. Let your dress air out for a day or two before you store it. This is also a good time to mist it gently with the water/fabric softener mixture.
