An upcoming episode of Glee devoted to the musical stylings of Britney Spears will have a very, very special guest star, Us reports: Britney Spears. "Britney, I think 100 percent, is going to be on the episode," show creator Ryan Murphy said today on Ryan Seacrest's radio show. "I really admire what she's done with her life and how she's turned herself around." Spears is in good company: John Stamos appears in her episode, and other upcoming guest stars include Javier Bardem, Susan Boyle, Paul McCartney, and Carol Burnett.
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