The back of my dress in the red & ivory stripe cotton.
I won't be making the entirety of the petticoat out of this silk, choosing instead to make the parts covered by the polonaise out of a fine burgundy or neutral cotton. This is an historically accurate way to save on silk, and was done by even the upper classes. 3 yards should be plenty to cover the front and lower hem around the back in silk over the red cotton lining, leaving the remaining silk to make a flounce or a lot of ruched trim.
I'm going for something between the very late 1770s, to around 1780. Something like this:
As you can see above, the trim on the contrasting petticoat only decorates the front, something I find interesting and as a bit of a relief. I don't *need* to try and trim the entire circumference, and it's still historically appropriate. I also know I won't have enough of the printed polonaise fabric left over to make trim from. So, the use of a sheer ivory silk organdy I have stashed away should make for a nice contrast trim, similar to the gown in this plate:
Of course, the trimmings on the polonaise will be different, but I wouldn't mind experimenting with that ivory silk organza I have. Some of the textures on the body and sleeves are stunning, and I'd like to try doing some Hertzenruch (heart ruching) style trims in that sheer ivory. Below uses a similar technique as what we see on the gown above, only done on a single ribbon:
You can find a tutorial on how to do this style of trim here at Threads.