Who took the cat's collar?

Getting ready for the Con...that would be Manga, Anime and stuff... this is the second day...she is Batgirl....now someone should tell her that Catwoman she is not and that red thing that is around her neck???? the cat's collar....

Le volunteered for 3 days worth, she worked "crowd control" and was nabbing voice actors when they exited the restrooms  (shhhhh, she's Batgirl)....