After much will she/won’t she speculation, it has finally happened – Britney Spears was on the set of Glee. The show’s cast have been filming their special Britney episode and the lady herself rocked up on set to join in with the fun. As a result we are pretty much so beyond excited that we’re virtually vibrating. One of the world’s greats pop icons appearing on the all-singing, all-dancing TV show of the moment – it’s just too much. Britney Tweeted about her set visit and even posted a picture online to make fans super, mega excited about the whole thing. We actually cannot wait to see Glee’s Britney episode, we’re not sure how they’ll do it, but we’ve got a feeling that it will easily top the Madonna episode.