control detail part of body issue

Heres a tutorial that shows how to fix them. In the future, try to make this area tighter to avoid this problem

Untrelated to the problem at hand:
- you should choose the reference that is of the same length or a bit longer than your item. Right now the very bottom of the dress behaves like legs instead of a skirt because it received the data from them;
- the dress should be vertex painted with two colors, you can also transfer vertex paint from the reference