I actually do think they might be metal, but a very lightweight something like aluminum is most likely. With blunt edges that just looks sharp. As for what they are, no telling. This is the kind of thing you'd never replicate exactly. The whole thing seems to be a full-face prosthetic, probably made on a facial mold before it's applied.
I liked the look enough to go trolling through the pages of pinterest results on google image search, and finally found photo credits on Reddit. She doesn't appear to have been active in a couple of years, though.
https://www.reddit.com/r/WTF/comments/1ne6vu/my_favorite_wtf_halloween_costume/
https://www.facebook.com/Nytroxsfx
I liked the look enough to go trolling through the pages of pinterest results on google image search, and finally found photo credits on Reddit. She doesn't appear to have been active in a couple of years, though.
https://www.reddit.com/r/WTF/comments/1ne6vu/my_favorite_wtf_halloween_costume/
https://www.facebook.com/Nytroxsfx