Top Clipping

Hi. Your garment has no proper uv_1. Either the reference was hidden or you forgot to enable UVs button.

There are other issues/improvements you could make:
- in MD do not use Remesh, it only makes things worse. Model in Quads and Keep particle distance high;
- when closing holes, extrude and collapse them. This way the polycount of the created geometry will reduce in half;
- do not transfer any data to the body, it is already perfectly adapted and re-doing it may mess up things;
- delete as much of the body covered by the garment as you can, otherwise it may poke through your garment and occupy valuable uv space;
- do not scale uv islands individually unless the difference in quality is acceptable. It makes sense for buttons' uvs to be bigger but not for the front pattern;