Do all dresses need lining?
When it comes to dresses, a lining should be used in dresses made of stiffer fabrics, or fabrics that have a tendency to stick to the skin. Just like with skirts, a lining won’t be necessary for the majority of flowy summer dresses.
How much shorter Should a skirt lining be?
The finished lining should be about one inch shorter than the skirt, or it may extend only to the upper edge of the skirt hem. If the skirt and lining are to be hemmed as one, mark the hem length on the outer fabric. Fold the hem up and trim the lining at the fold.