I'm using the descriptive text on the Wiki page about this painting, which provides a lot of description. I do enjoy writing ekphrastic poems, responding to the painting's title and description. I feel the Madame in this painting is the kind of Bond girl who would appear in the novels of Ian Flemming.

The Art of Wearing a Dress

spies love a lady
who wear dreses
with a mind of their own
ready to fall
from the shoulder at the hint of a glance.

In a room of mysterious shadow
the skin can sing
a siren song
if the dress possesses
an equally dark soul.