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In page Lady Diana Cooper:

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In her prime, she was regarded as the most beautiful young woman in England, appearing in countless profiles, photographs and articles in newspapers and magazines.[citation needed] She was an active member of the Coterie, an influential group of young English aristocrats and intellectuals of the 1910s whose prominence and numbers dwindled during the First World War. Some view them as prophetic precursors of the Jazz Age.[citation needed]