Apparently, for some, the naughty librarian makes a good Halloween costume.

This er… outift, carried by ever-tasteful Target, includes “a navy blue dress with screen-printed skirt, attached tulle petticoat, shawl, rhinestone glasses and removable “Naughty Librarian” badge” and is 100% polyester for your comfort.
The item is currently sold out.
It’s not a costume if you need a badge telling people what you are. That said I’ve been trying to visualize and it ain’t happening. Maybe she needs a whip.
I can see it now…
SILENCE!!!!
Oh wait that was Dumbledore and he would look horrible in that outfit.