Pretty Little Liars' Alison DiLaurentis will have an entirely new clique when the Liars return this Christmas.

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A sneak peek for the series' first holiday episode shows that the upcoming Ice Ball will shake up the dynamic in Rosewood - Alison will have new minions to boss around, Mona will become a ghostly apparition, and 'A' will make a menacing appearance during "How The 'A' Stole Christmas."

As Rosewood's resident sociopath makes a regal decent at the ball, it's clear she has replaced Spencer (Troian Bellisario), Aria (Lucy Hale), Hanna (Ashley Benson), and Emily (Shay Mitchell) with four masked - and rather evil looking - girls. While Hanna and her friends prepare to make a hasty exit, they walk past the one person they have been trying to identify for the last four seasons - 'A' donning a face-shrouding white fur coat.

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Elsewhere, Mona (Janel Parrish) will be back in the picture, and she will be taking on a Christmas Carol role.

"I get to be the ghost of Christmas past, present and future, and I get to haunt Alison," Parrish told Hollywood Life.

Find out more when Pretty Little Liars returns this December. Click the video below to get a peek at "How The 'A' Stole Christmas."

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