I shopped my closet and found an old slip I just love. You don't want to know how long I've kept that thing and not worn it! It works for my longest summer dress that ends just below the knee. Now that the hot weather arrived, it's wonderful to have a slip that hangs from the shoulder straps, no elastic at the waist, not tight shapwear. Now need one more slip for just above the knee dresses. Might check out vintage shops.
Ok, the slip is circa mid-eighties, ha, ha!