All of the Rho Chi's had to temporarily neutralize their letters. Sometime in the past century, sororities began to imbed chips in their newly initiated members so as to do away with pretenders.
There is no more lining up alphabetically to enter the houses. PNMs are transported to either the "Rush-to-Pledge" area or to the "What's your name? Where are you from? What's your major? (W^3)" area.
And what to wear during recruitment is much more democratic. No matter what you wear, there is special lighting that instantly turns all PNMs clothes to an identical shade of whatever each chapter chooses. Needless to say, all there is left in order to stand out is showing skin, but that only works in fraternity houses in 2354 ... just like it did in 2014.