Question: how to calculate fabric for gathered skirt?
Answer: To determine how much fabric you'll need, multiply your waist measurement by 2. For sizes 8 and under, you will only need 5/8 yard of lining if your lining fabric is 55-60″ wide. Sizes 10 and up will need 1 1/3 yards of lining. For the main fabric, any width of fabric will work.