80% of my classic skins do not show up for other people in my worlds even though i have it equip and can see it in third person. There doesn't seem to be any logical pattern to what skins work and which don't, just most of them don't. My friends with the same packs I can see their skin but they can't see mine. I joined friends worlds and they can see my skin, but as soon as we go back to my worlds including newly created ones, they aren't able to see my skin.