Most tightlacing corsets depend on the linings for strength.
Most real tightlacing Corsets are three layers thick. There is the top fashion fabric layer, the middle lining which is a tightly woven cotton or poly cotton, and the main lining which is usually cotton coutil.
The top / outer layer is your decorative fashion fabric. the choice is huge here but quality counts.
Simple natural fabrics are the easiest and most rewards – but really anything goes if you can sew it., and it is not too heavy or bulky.
The middle lining helps to stabilise your fashion fabric.
Each corset panel is flat lined with pre washed cotton lining. A good weight is s 135g per metre. dark for dark fabrics and white for lights.
The main lining is coutil, again pre washed for shrinkage. Press.
The pieces will have been cut out with the waistline on the straight grain for max strength, unless a pattern piece indicates otherwise.