Katy Perry has signed on to guest star on an upcoming Christmas-themed episode of Fox's The Simpsons, according to The Hollywood Reporter.

Katy Perry will play herself on The Simpsons, but will not be animated. Instead, she will play the role of bartender Moe's girlfriend in a live-action scene that features the show's cast as puppets.

Homer and the The Simpsons gang will also join Katy Perry in a rendition of no_film|The 39 Days of Christmas} during the episode, which is titled "The Fight Before Christmas" and scheduled to air Dec. 5 on Fox.

RELATED: The Simpsons Movie 2 Reportedly in Development at Fox