The burgundy and dark dress has narrow straps and bright chevron-like rows above a border of long hanging strands. Both gloved hands are raised; one holds out a section of a long pale round necklace. A gold-toned band and chain-like detail sit around the head, and drop-shaped bright earrings appear beside the face. The full head and face are included. Closed gold-toned shoes with ankle straps are visible below, although part of the lower footwear area reaches the image edge.
The raised hands change the necklace’s shape and position. This is a useful photograph for seeing its round elements, but it does not show how the whole length rests against the dress when released. Compare that pose separately from the pointed rows and the start of the hanging fringe. The still image does not confirm actual pearls, a particular metal or a historical date.
For your own combination, request a resting view of the exact accessory and a clearer complete lower view if the hem-to-shoe relationship matters. You can borrow the visible narrow headband idea without assuming that every bright detail belongs to one supplied set.