The fabric for a plain fitted waistband is cut

to a specific length and width, usually based on the wearer's waist measurements plus a small amount of ease for comfort. The fabric can be cut on the straight grain or on the bias, depending on the desired stretch and drape of the waistband.

To cut the fabric, a pattern or template is used to trace the desired shape onto the fabric. Once the waistband shape is traced, it is carefully cut out using fabric scissors or a rotary cutter. It is important to cut accurately to ensure that the waistband fits properly and lays flat.

Some waistbands may also require additional pieces like interfacing or lining. If this is the case, those pieces are also cut to the necessary shape and size and then attached to the main waistband fabric.

After the fabric is cut, it is ready to be sewn together to create the finished waistband. This typically involves sewing the raw edges together and attaching any closures like hooks, buttons, or snaps. The finished waistband is then attached to the main garment, usually at the waistline, to provide structure and shape.