22 inch full slips measure about 22"" from your natural waist to hem and is ideal under longer dresses and skirts. Many full slips feature shaped bodices, some in ornamental satin or lace with darts and other fabricated more like shapewear, offering bust support.
For knits of other clingy dresses, try a smooth, tailored 22"" slip. The fabric will lay smoothly against the skin and keep dresses from clinging. For something more playful and decorative, there are 22"" length slips made of satin or charmeuse, elaborately detailed with lace or high slits. These slips work just as well as sleepwear or even outerwear.