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As part of this year's Diamond Jubilee celebrations, Sian Williams and Dan Snow present from Westminster Abbey a special edition of the show celebrating Britain's past. Featuring Twiggy in conversation with the designers of the monarch's clothes, Larry Lamb examining the increasing value of 1950s memorabilia, and historian Lucy Worsley's comparison of London in 1897 - when Queen Victoria celebrated 60 years on the throne - and now. Plus, Dan Snow chats to hairdresser Michael Douglas, and secrets from last year's royal wedding are revealed.