Put it into poiyomi's shader, messed around with matcap masks(two of them) and metallics to get this look. Was annoying, things didn't translate as well as I thought they would.
Made it so the PBR materials are baaarely visible to keep the anime style but add more subtle detail, whilst also stylizing the gems with mat caps and the velvet is using a matcap, too. It wasn't playing nice with my settings for the gold metallics, so I had to relegate it to matcap