As i'm sure you all know by now, Miss Britney Spears herself is making an appearence on the second episode of "Glee" this upcoming season which is, in fact, centered around her music. Today was Britney's second day on set and she keeps tweeting to her fans about it. The most recent tweet was this picture with actress Heather Morris and a message to her fans that reads "All my GLEEKERS in the crowd, Grab a partner take it down." making a clear reference to her "Me Against the music" video where she appeared with Madonna. Are you excited for Glee's return?