The long red dress shows many small bright reflections and lower side areas beside the upper arms. Its upper edge is curved and gathered at the centre. More vertical lines divide the closer bodice while the skirt begins widening from the waist. A high leg opening appears at the right of the image. Both hands stay low, with one holding some side skirt area. The head is cropped above the mouth; a longer pale earring and part of an open ankle shoe are visible.
This supplies another wider front comparison rather than a complete rear section. Cloth reaches the floor at the bottom without explaining the whole rear outline. The many bright points also do not establish a particular embellishment technique or fibre. Consider the wider skirt separately from the hand holding some of its side surface.
Ask for the actual offer’s complete back and a quiet stance with hands free. A whole upper view is also missing for jewellery beside the face. Add your own shoes before discussing the preferred length or a particular alteration, keeping the upper-frame and rear-length requests separate.