off the shoulder prom dress A-Line Velvet Dark Blue Long Dress, Dark Blue Long F – shopluu Plus Dresses Athîral Women's Black Floral the off Color:Wildflowers

off the shoulder prom dress A-Line Velvet Dark Blue Long Dress, Dark Blue Long F – shopluu Plus Dresses Athîral Women's Black Floral the off Color:Wildflowers

Athîral Women's Black Floral Lace Backless Sexy Dress With Long Sleeve Fitted Maxi Dress Elegant Evening | SHEIN USA

Peter’s investigative team up with Liz is charming

Plus Dresses

Color:Wildflowers

The color is clearly taken from the Tuareg and other desert cultures of the Sahara, and the over shirt has very clear medieval influences (it's very similar to the overdresses worn by men of low class during the 12th and 13th century), but aside from that, I haven't been able to locate any other reference

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