In this case let's give three cheers for period fashion plates!
Both of the girls will be wearing skirts. Which I must say was a bit of a shock from Miss B as she will do everything in her power to make it very clear at every turn that she is not in any way shape or form a 'girly girl'.
Miss B's hemline will be longer than Miss M's as would be the custom with children's clothing in the past. If a woman's skirt or dress hem line was at the ankle the youngest girls would have their hemline closer to the knee and as they grew older and closer to being called a adult the closer the hem line would get to where a proper lady's would be.
Miss B would like to have a shirt and vest, as would be more fitting for her Halloween persona, with a cape or cloak for warmth (if the temps drop again). Every available fold and possible hiding space on her costume will be used to stash 'easy' access tools of the trade for her monster hunter.
I must admit to being slightly stumped on how to work the upper portion of Miss M's costume. I think she and I need to do more poking around at that little detail.
-The head Wench