It's a long walk from the upper east side but Gossip Girl's Blake Lively (Serena van der Woodsen) and Leighton Meester (Blair Waldorf) decided to slip on their boots and take the trip. But why? An article on EW.com reports they will be playing former high school classmates of Liz Lemon and it will be revealed that she was once a mean girl too! This flashback of course taking place at her 20th high school reunion.
But what about Chuck?



