In blender, copy the shapes from a sewing pattern into planar meshes so they look like they've been cut out of flat material. (I keep the pieces vertical so that they're ready to wrap round a dummy).

Firstly I like to acknowledge this MMD addon that works very well in Blender 2.92 and I understand will also works well in the final release of 2.93 and 3.0 .. that means we will have continuity to ...