Velvet, a MUST HAVE
If you add nothing else to your wardrobe, do add some velvet. You don't need spendy silk velvet; take a look at velours, panne velvet, velveteen. However, the cost of silk is justified in the luxury. And it can be washed and crinkle pleated. It will last for many seasons.
See Marcy Tilton's how-to's courtesy of McCalll's Pattern Company. I learned these techniques from Marcy many years ago and they all hold true. However, she does have a NEW tip to help keep seams together for stitching.