It's already Christmas season on The Simpsons. Or at least Christmas casting season.

As first reported by Entertainment Weekly, Martha Stewart will guest star as herself on this December's Yuletide-themed episode of the longest-running show on television.

“Marge Simpson receives a nighttime visit from the most powerful force in the universe who teaches her the true meaning of Christmas: Martha Stewart,” said executive producer Al Jean.

When Stewart flies to the family's home in this dream sequence, “she cuts off Santa Claus" and tells him off, Jean adds.

The episode will be titled  “The Fight Before Christmas” and will air close to December 25, 2010.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.