- London's V&A museum has launched an exhibition on the history of underwear
- With over 200 pieces -- from the 18th century to present day -- it is the largest of its kind
- Sarah Shotton is creative director of British lingerie brand Agent Provocateur, a key sponsor of the event
London (CNN)Why do we wear underwear? Whether for health, hygiene, sensory or fashionable purposes, the evolution of our undergarments is one that directly links with cultural changes in society.