Before Pics
Ok here are the before's. I ripped out the front skirt from the back so I could cut it easier. I measured 30 inches from the waist down and cut the circle and that should be long enough for the tree skirt. I will line it with it's own lining too. Normally I would put a tab in the back seam for the closure but in this case I can't, because it is covered with beads lol. I will put the opening with a tab on the side and it will be just fine.
Here are the two skirt parts, not cut yet and the two body parts.