The second part of our history of British fashion.  Find out how you could get sent to prison for wearing the wrong trousers,   why Piccadilly was known for ruff trade,  how the bowler got its name,  and who were the original mad hatters.     We uncover the secrets of the oldest shoe in Britain, hear about the top hat riots of 1797 and reveal how a famous prime minister invented the onesie.   Hear how The Mods and hippies of swinging 1960s London and Malcolm McLaren and Vivienne Westwood's 1970's punk stylings changed fashion for ever.