There are two primary sources of materials needed to craft layered armor in MHW. You can only obtain the first one through limited-time event quests, which are always on rotation. So, for example, if you want a specific set, you’ll have to see if the quest is up or wait until it ...
MHW Costume Armor is a Monster Hunter World MOD which includes graphic user interface to customize the layered armor equipped. It is a C++ implementaion of the originalMHW Transmog. Available also atNexus Mods Release! Checkout the compiled binaries on the latestRelease!