blender Adjusting Mesh Clothes to Different Mesh Bodies in Blender

[Mocahh]

Hello! I've been learning Blender for a couple of weeks now, and I finally got the basics when it comes to making mesh, rigging, weight painting, and exporting. The question I have now is how do I make mesh clothes that I've created fit the different mesh bodies?

I made some mesh pants using the Slink dev kit and Marvelous Designer, and I finished the mesh completely and uploaded it to sl with textures and all. Now I want to adjust those pants to fit the Belleza and Maitreya bodies. I have the developer kits, and I even tried to rig the Slink-sized pants to the Lara body in blender to see if it would snap to that body once I turned it into fully fitted mesh, with no luck. Another thing I did was manually fitting the pants on the body (resizing, moving, and rotating) and it looked alright until I went to rig it.

This is the pants on the Slink body compared to what it looks like when I manually fit it to the Maitraya body (obviously not as smooth and pretty)

After I fit it manually, I went to rig it and this happened: 

There has to be a better way to do it than what I've been trying. I would really appreciate it if anyone could help me.

Edited December 11, 2017 by Mocahh

[MaggiJin]

I don't know if its different in sl, but i've done some mesh rigging for other games. i believe you may have an incorrect or corrupted rigging for the maitreya body.