To preen oneself to the extent of looking a minx!
From head to toes. Complete hot overhaul. Usually in preperation for a big event. Some say sexified, but if your a minx, you say Minxified!
Girl 1 - All this effort we go to minxifying ourselves.
Girl 2 - I know! But we're going to look amazing...
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"