It's hard to believe that The Simpsons is still on the air — but, hey since it is, why wouldn't the cast of Glee make an appearance? The Fox sister shows will have a bit of crossover during the season premiere of The Simpsons on September 26, and the first pics have been released!

Zap2It has photos of Rachel (Lea Michele), Mercedes (Amber Riley), and Finn (Cory Monteith) as they get turned into cartoon characters — who look just like their real-life avatars, we might add! See the pics here. The episode, titled "Elementary School Music," finds Lisa Simpson getting sent to music camp and having the time of her life. Also appearing in the episode are Jermaine Clement and Bret McKenzie from Flight of the Conchords. And yes, we are marking this on our calendars right now!

Source: Zap2It