A floral front with a skirt opening offers a pale shape reference here. Larger leaf motifs sit over the sheer-looking bodice, with vertical lines leading to the waist. Short floral sections rest beneath exposed shoulders. The skirt broadens below and reveals a front opening with leg and pale strapped shoe. Hands sit at the sides near the hips, and rear fabric spreads on the floor. The picture documents no clothing size and is therefore not used as a size sample.
Choose one visible feature for your enquiry. You might want the lower shoulder edge or a quieter skirt beside the floral bodice. Ask which actual model provides that combination and which version can be tried. A size cannot be derived from these shapes.
Try the real candidate with intended inner pieces and shoes. Leave hands relaxed initially, walk and sit. Inspect the opening before arranging the skirt again. Another coverage or length preference needs a specific proposal explained on the dress rather than an invisible layer supplied from the photograph.