The notoriously picky judge dressed as Dr Seuss's green-faced grouch for the festive edition of the BBC1 dance show.
The curmudgeonly character tried to ruin the season of goodwill by stealing presents in Seuss's book How The Grinch Stole Christmas! It was later turned into a film starring Jim Carrey.
Contestants such actress Su Pollard, Blue singer Simon Webbe and EastEnders star Charlie Brooks will be taking part in the show, to be broadcast on Christmas Day.
It will also feature Russell Grant dressed as a fairy.
The roly-poly astrologer proved an audience favourite with his over-the-top stunts during the recent series, which included being fired from a cannon and riding a mechanical bucking bull.