First opened in 1906 (yes, that is not a misprint!) and best known for introducing Capri pants in the 1960s – famously worn by Audrey Hepburn, who bought them here – La Parisienne can run you up a made-to-measure pair within a day. It also sells off-the-hook Capri pants (from €250).
Jackie O was a customer, and Clark Gable apparently favoured the fashions here, particularly the Bermuda shorts, which (believe it or not) were considered quite raffish in their day.