Young girls who stalk people together, usually in a group because they know it is creepier to stalk alone. (Also it is more fun to stalk in a group, apparently.) No harm is meant to the stalkee's but the girls can be pretty creepy at times, almost to the point of insane.
Stalker girls - A group of sophomore girls stalk a group of freshman boys by following them around way too much, and leaving them messages with hints to who they are. (Dance magazine subscriptions = Dancers, or perhaps they would put in their initials like 'TJF')
STAY AWAY FROM THEM.