You really know it's Christmas when stuff like this starts being the rigour. A cabaret show featuring musical performances by the classical singer and guests. Building on her success on Dancing with the Stars, the American version of Strictly, Katherine takes part in a number of routines including the tango, tap and Viennese waltz, and is joined by comedy actor Mark Benton, who takes on the role of master of ceremonies, introducing collaborations and surprises galore. Il Divo, Stooshe, Andre Rieu and the Johann Strauss Orchestra, the Overtones, Tom Chambers, Only Boys Aloud and Kev Orkian join in the fun.