One trick is to load the cloth but don't conform. If the cloth has morphs, use them and scale as close as possable. Use magnets to for poke through and other fixes.

Now export the cloth as wavefront object, single frame. In the Hierarchy Selection, un check Universe and then check the cloth groups. Save with new name to what ever geometry folder so you know what it's for. On the last popup window uncheck everything and check the very top box. Now open your L3 Cr2 and replace the .L3 .obj with the new one. There will be 2 lines so just use the replace all to save time and scrolling. Saveas the Cr2 with a new name so you don't over write the original. You can even use one of L3 shirt/tops Cr2 instead of Laura's.

That should give you conforming clothes that look better in that area.