The folded shoulder edge sits broadly below both exposed shoulders. Numerous small pale reflections spread over a long warm pale to golden-looking shape. Diagonal gathers cross the waist and hips. The skirt initially follows the body more closely before broadening farther down. Additional fabric spreads on the floor behind the body. The hair is loose. Both hands are behind the back, leaving the front waist uncovered by them. Shoes are not clearly visible.
Describe the relationship between the broad upper edge and diagonal middle lines first. If you like that combination, find a real candidate that actually offers it. The exact reflective surface or identical colour are separate questions. The image alone establishes neither genuine pearls nor a particular fibre.
Then try a normal position with arms down at the sides. Inspect the waist again and add the same dress’s full rear view. A distinctive effect for you may already lie in this one relationship between lines. The picture need not establish rarity or bespoke production; the confirmed version of your actual candidate remains decisive.