Time for a little game of spot the difference. On the left are Marc Jacobs'  'Mouse' flats, one of his most iconic shoe designs, which is constantly re-worked in new colours and prints. The gold leather pair are £220 / $389 at Net a Porter. On the right are a freakishly similar pair of pointed gold leather flats. The main difference? A saving of about 90%! They're from Gap for $39.50.