Mrs Brown's Boys, created by and starring Irish comic Brendan O'Carroll, airs Christmas and in the New Year on BBC1.
Cousins joining cast of Chicago
Robin Cousins will play Billy Flynn in Chicago
Dancing On Ice judge Robin Cousins is to join the cast of West End hit Chicago.
The Olympic gold-winning skater will make his debut in July, days before the opening ceremony for London 2012.
Robin, 54, will play lawyer Billy Flynn, the role taken by Richard Gere in the Hollywood version of Chicago.
He has previously had stage roles in Cats, The Rocky Horror Show and Grease.
Robin- who won his gold at the 1980 Winter Olympics at Lake Placid - said: "Joining the cast of Chicago as Billy Flynn will be an amazing experience and is a dream role for many actors.
"Doing the show at a time when the world's best athletes are here for the greatest sporting event on earth will make it even more thrilling."
Robin - who joins the cast on July 17 - will also be mentoring the British synchronised swimming team at this year's Olympics.
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