map1

Soft shape top with an extender to make it a long top.
You can shorten the extender or make it transparent{transparency needs Blending checked}.

There may be some clipping with wide skirts/hips with the extender.
Also, the extender may clip a little with the top as it wasn't made for the top it just happens to work with it.
It's advised you use the same texture for both the top and extender {paint everything on one map and use that for both materials}

Wireframes:Top + Extender
Other SoftShape Derivables

Products by Alelujah