what is the correct positioning for a SCULPTED underbust corset for a sculpted piece

[Amethyst Jetaime]

Unfortunately it will shift around no matter where you attach it.  The corset will follow whatever point it is attached to as that part of the body moves around.  The only way to avoid it is to make it rigged mesh.

[Amethyst Jetaime]

Unfortunately it will shift around no matter where you attach it.  The corset will follow whatever point it is attached to as that part of the body moves around.  The only way to avoid it is to make it rigged mesh.

[Theresa Tennyson]

You're seeing one of the reasons sculpted clothing never became popular...

If you're committed to using sculpts, you might try this: Instead of making the corset a single piece, make two pieces - one for the top of the corset and one for the bottom - and attach them to different parts of your body. Make them both so they're built like cups, with the "brim" at the top and bottom and the curved, closed parts overlapping in the middle.This is similar to how sculpted boots used to be made.

[Lindal Kidd]

This is one reason why I advocate good old-fashioned clothing layers for very "tight fitting" clothing.  It ALWAYS moves correctly with your body!  Fitted mesh would mostly work too, but you may run into the body cutting into the edges of the mesh object in certain poses.