Add Godets to a Simple Flared Dress Pattern
A godet is a wedge of fabric added between seam allowances, or inset within a garment, to give extra flare at a hemline. Godets add a body-conscious fit through the hips while increasing fullness around the hem. They add motion for dancing, create greater design interest, and enhance swing in a dress. Louise Cutting explains how to customize a simple pattern for a flared dress in this article from Quick Stuff to Sew, Vol. 5.
You can also use this same pattern template to create this lace top.