Costuming Question

[isabelladangelo]

I stumbled on this portrait and was curious what everyone else thought about the bodice part of the gray overdress. It looks like it's crinkled a bit to get the iridescence of the silk to show. The undergown also looks more like it's one of the "loose" gowns (check out the embroidery/trim down the front), to me at least.

Any other ideas as to what is going on with the open t-shirt bodice gown?