Okay, so I had tried searching for a visual "map" of which costumes corresponded to which outfit number since the devs didn't think it would matter if they were all jumbled up. Well, I couldn't find one, so I made one. It's not super fancy, and a couple characters are missing. I'm pretty sure that they are all in the correct order. So, here you go, hope it helps.

(Edit:Replaced with more correct version)