Jenny Packham Silver sequin evening gown "Carrie"

Jenny Packham, Carrie silver sequinned evening gown, the dress consists of an attached slip from jersey, over that is the sequin covered mesh dress, it closes in the back with a concealed zipper and a hook and eye features, the dress is in very good condition, worn once, I attached a bag of spare sequins to the label. It has been worn once to a gala and is freshly dry cleaned
I am measuring the slip as it fits closer than the dress:
Armpit to armpit 47 cm, waist 39 cm, length 150 cm