Hansel and Gretel. Please note the bread in Isaac's hand that he insisted on bringing with him so he could drop crumbs.
Hansel being upset because his dad left him in the woods. (Have you read the story lately, it's actually pretty disturbing!)
I found Lucy's dress at Goodwill a while ago and altered and changed it a bit. Isaac's lederhosen were from my parent's dress up box, they're the real deal! Everything else was stuff I already had.