Poison Ivy’s costume is one of the most versatile. Though you can interpret any costume in a different way from the classic style (and sometimes there’s more than one classic style), I think that Ivy’s outfit is especially suited to be twisted, revamped, and turned into something different. I’ve seen it mixed with steampunk and Victorian aesthetics more than once with varying degrees of success.
This version works for me because of the different textures – lacy gloves, leaves, satin-y skirt, ruffles, curly and straight hair – it makes for an eye-catching combo.