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The former glamour model is joined by Marcus Brigstocke, Joe Swash and Waterloo Road star Philip Martin Brown on the lineup. Previously-announced names include Noel Fielding, Caroline Flack and Lulu.
Jo Wallace, BBC executive producer, said: "We're so excited to announce these latest names, they add to an already fantastic lineup and this year's show is shaping up to be a fun packed, high energy event all in the name of charity."
Steve Jones and Alex Jones will host the series, in which the celebrities pay homage to and perform iconic dance routines in front of a live studio audience and panel of judges.
Let's Dance For Comic Relief starts on Saturday, February 19 on BBC One.
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