By Victorian I mean the dress doesn’t follow her curves naturally as a modern dress. The dress I am looking for has to be simple at the top and follow her curves down to below her thighs, and then the skirt starts with ornaments. Just like in the picture.
I’d say it’s at least inspired by Victorian-era skirts. In particular, the kind that have ruffles in back, forming a bustle. Here’s a very simplified version:
Some Victorian dresses had very elaborate ruffle bustles, where the ruffles go all the way down the back and around the hem of the skirt.
But I suspect that would be kind of a pain to do in Poser. What happens when she sits down? Extreme poses in general would be a problem, because the ruffles would deform unnaturally. With a full skirt, it wouldn’t matter so much.
Maybe you could do something with the bustle in the MFD expansion pack? Combined with a skirt that has ruffles on the bottom, like the one of the flamenco dresses.