Jenny Packham White sequin embroidered evening gown

Jenny Packham white sequin embroidered evening gown, the bodice is sequin embroidered, the skirt is chiffon, it is fully lined. Low cut in the back, in really good condition, however when I picked it up from the dry cleaner, I managed to smudge it a bit at the hem, it is not visible when worn, even if you search for it barely visible, please see pictures, it is sort of pin head sized.
Armpit to armpit 44 cm, waist 34 cm, length 145 cm