How the Hermes Birkin became the most desired bag

The Birkin bag has only been in existence for 31 years, but it has become imbued with a legendary status which no bag before or since has enjoyed. The Birkin is the ultimate symbol of wealth and luxury, just as likely to be seen crocked in the elbow of a Kardashian or a Trump (Melania has a particular penchant for Birkins.

"This was a specially ordered off-pink colour that I got in Paris," she once told the FT of one in her collection) as Victoria Beckham, Kate Moss or a high-powered businesswoman.

Named after Jane Birkin - who celebrates her 69th birthday tomorrow - the Hermes designs are still hailed as one of the most valuable and safe investments a woman (or man) can make.