Katy Perry on The SimpsonsKaty Perry's latest appearance on TV in the Christmas episode of 'The Simpsons' isn't likely to earn her any edits, like the curvy duet with Elmo that got her cut from 'Sesame Street' this fall. But that doesn't mean she's playing it safe.

Perry appears in a form-fitting red latex dress featuring the faces of America's favorite animated family. Next to Perry, the Simpsons are in rare form -- appearing as puppets, that is -- when they meet the chart-topping, doe-eyed pop star. After providing a very warm hug to the frigid Mr. Burns, Perry sings a Christmas carol parody with the gang.