This is based on AHTU's port, so there are missing backfaces inside of the inner shirt and sleeves. I have no idea how to add those back. </3 I've scaled this to fit with tight-fitting pants; model is wearing Key's Little Dark Age: https://www.xivmodarchive.com/modid/129048
There may be some clipping with C+ scaling/certain idles/animations/etc. C+ is on in preview. Let me know if there are any issues, but otherwise I hope you enjoy!