Mesh Deforming When Sim is Moving

Hi. There are a few causes of this issue:
- the mesh deforms like crumpled paper because it has very dense topology. Maxis meshes are very low poly. When you transfer weights from them, the paint looks patchy. When you smooth the paint, it spreads in areas it should not, so you should try to avoid doing that in the first place. The solution is to make your garment as low poly as it can get while looking smooth, then transfer all data from a similarly shaped maxis mesh with Nearest face interpolated. Your mesh does not need to be high poly in the first place, those few wrinkles in the back can be preserved through baking textures from high poly to low poly;
- the skirt is affected by calf morphs because it is not vertex painted with 3FFF00. Dresses are vertex painted with two colors and it is always best to just transfer this data as well;
- the referenced you transfer data from was shorter than your dress, so it received data from legs as well.

You should go back to Zbrush and dramatically reduce the number you put in Zremesher. Then clone a maxis dress that is of the same length or lower, export it, open, import your dress, close the hole, transfer weights, uv_1 and vertex paint to it with Nearest face interpolated, clean and limit weights.

Heres an example of how it is done, you just do it with your reference instead of the one under the rig