We'll leave it to the "ridiculously beautiful cast" of Gossip Girl to explain why you should tune in to tonight's debut episode (The CW, 9 p.m.). They used words like "hot," "glamorous," "fresh." And as Leighton Meester, who plays It girl Blair Waldorf on the show, tells PEOPLE.com, "It's about Upper East Side kids who have tons of drama...disposable income at their fingertips at every moment–the way I explained it, won't everyone want to watch it?"