The floral close front places fine low folds across the upper arms below exposed shoulder tops. A V- and heart-like shaped centre sits above dense flower and curving motif drawing. Small finer intervening regions differ from pale decorated areas. The crop reaches the upper hip without including the whole lower skirt, hands or shoes. Head and face are fully visible. Hair is pinned low back, with a small pale stud earring and longer loose strand beside the profile.
The small ear shape keeps the curved upper dress border and denser motif visible. Compare your hairstyle and an actual small pair in that arrangement first. A larger jewellery piece would become its own second trial. The visible bright spot establishes neither pearl nor a particular stone, and photographed light does not prescribe the exact colour of your piece.
Request the real dress’s complete front and corresponding back. A close bodice cannot explain an entire mermaid line. Establish whether motif distribution or the lower folded shoulder surface matters more. Complete the lower direction missing here only through a full view of the same actual model.