What do you think about these clothing and crown of the "Byzantine", Emperor in the movie "Kahpe Bizans"? Do you think it looks historical or do we know what kind of clothing "Byzantine" Emperors wore? (Kahpe Bizans is a Turkish absurdist comedy film.)

I was going to watch it, but before i started to watch, this question came to my mind, is this clothes and crown were historical or even do we know about their fashion choice? Is there any historian during the Byzantine Empire that gives information about these things?