What item to clone for my mesh?

I'm trying to make some cat ears CC but I don't know what item to clone for them to sit on top of the hair. When I clone the hats and import my mesh and try it in game half the hair is removed like in the picture. If I select a hat that covers the entire hair then everything is removed in game. I realized it's probably not the hats that I need to clone but something else? 
Btw, for some reason one ear turned green like the shirt (it's supposed to be all black), not sure what's going on there.