This hat takes on a look of Ottoman sultans headdress
I would like to be more precise with its origin but I failed to find a contemporary image that matches, in the long run, it's a theatrical hat so could be pure fantasy.
Most images of Ottoman headwear are of oversized turbans, but particular later 16th/17th C period headwear starts to include headgear that looks similar to this.
Anyway, this hat is all about the accessories, the tall forward leaning feathers which ultimately make this hat stand out.
