Fit is essential and so is wearing ease. This chart will help you determine what is comfortable for your measurements in a variety of fabrics. Woven, stretch woven and knits have their own wearing ease. You want enough room to wear your garments and be comfortable driving a car or lifting a bag of groceries.
Design ease is added to this. For example you need a minimum of ease in the hip line of a skirt, but if it is pleated, you have additional design ease.
Men and women may use this chart.