I'm inspired to attempt to recreate another picture that I happen to own appropriate fabric for the gown
I intend to stay true to the details of the original so...
Layer one: A white camicia with a small self ruffle at the neck and wrists.
I already have a plain white cotton camicia that I made about a decade ago and I love most things about it except for two things, 1) I sort of gather/smocked using a single row of back stitch that tends to break when under stress, and 2) the neckline tends to disappear below the neckline of the gown when I am getting dressed-especially in the back-and after I drag it out, the fabric tends to pooch out underneath the stitching line and give me funny puffs between the neckline of the bodice and the neckline of the camicia.
I plan to make my new camicia out of linen and smock and line the neckline using the instructions from http://katafalk.wordpress.com/2012/06/26/patternmaking-for-the-kampfrau-hemd-chemise/. (Adapted to place the neckline above the bust rather than at the neck, of course.)
Layer two: A black and gold open front sottana, trimmed in gold, with ladder lacing and matching sleeves.
Layer three: A sheer silk overgown with gold trim. I am fascinated by sheer silk overgowns as seen in the picture. Layer three is going to be a big adventure as I try to collect more information about this variation of outerwear.
Layer four: The painting includes a set of pearl earrings with a matching necklace featuring a drop pearl in the center, a white handkerchief with lace edging, a white partlet with an attached ruff and a yellow and white ostrich feather fan with a gold sculptured handle. I think those all sound mighty fine, so that's the plan!