Betty White is lending her voice to the character of Mrs. Claus in a new animated Christmas special, ABC said Tuesday.

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The 7-minute short, "Prep & Landing: Operation Secret Santa," is to premiere Dec. 7 during the holiday classic "A Charlie Brown Christmas."

The second installment in the "Prep & Landing" series once again follows the comic adventures of Santa's stealthiest elves, Lanny and Wayne.

"With Christmas only a few short days away, Mrs. Claus, voiced by Betty White, and Magee, voiced by Sarah Chalke, enlist Wayne, voiced by Dave Foley, and Lanny, voiced by Derek Richardson, on a secret mission to retrieve a mysterious item hidden deep within Santa Claus's office! Can the intrepid duo acquire the target in time, or will they be discovered by the Big Guy, voiced by Morgan Sheppard, and doomed to placement on the Naughty List?" ABC said in a synopsis.

White, 88, is best known for her work on TV's "Hot in Cleveland," "The Golden Girls" and "The Mary Tyler Moore Show."