High School Girls Spend Thousands for the Perfect Prom NightWhitney Jefferson4/21/11 11:18am317EditPromoteGo to permalink For their story about "Extreme Proms," Good Morning America followed around a "suburban New York sophomore" during her quest for Prom Perfection. How much did she spend in preparation of High School's most glamourous evening? $3,300. Excuse me, how much?!