This artist created a wonderful cosplay of the Vietnamese Emperor Khai Dinh (1885-1925). He handmade most of the costume, including the epaulettes and orders. While not an exact replica, he did capture the opulence of the Emperor’s wardrobe.
I found this while doing some research for inspiration for a Vietnamese/Asian-themed steampunk costume. It reminds me that I have to do a photoset about the real Emperor in the future.