Vintage Dazzling Maxi Dress by Ruth Norman for Gay Gibson, see measurements

60s/70s long dress in sparkling navy and silver. Sleeveless with round neckline in front; deep V in the back. Silvery trim at arms, neckline and waist. Vintage size 9 but check measurements. There is some stretch in the fabric but not a lot. Bust 16” across while flat. Waist 13” across. Listing as juniors size 7.