LONDON (Reuters) – A decadent gown made from feathers and a printed lace latex dress designed by some of fashion’s luminaries will go on display as part of a new exhibition to celebrate the glitz and glamour of Britain’s ballgowns. Ballgowns: British Glamour Since 1950, on at London’s Victoria and Albert Museum from May 19 until January 2013, showcases a collection of 60 dresses marking the journey of formal attire from private events to the public parade. …