It's almost impossible to imagine now, we know, but there once was a time when cultural lynchpins Blair Waldorf and Serena Van der Woodsen existed only in the pages of YA novels, and as such their corrupting influence of superficiality, decadence and greed was limited to young girls (and a few girlish boys), rather than an across-the-board, if small, section of the TV-viewing public. But will the supposed literary antithesis to the Gossip Girl books make it to primetime? Let's hope not.