Book excerpt: The horse world's Trinny and Susannah styles rules for looking really good on a horse. Find out what works best for your size, shape and colouring and catch everyone's eye, for all the right reasons To be told that you should wear a tweed jacket for a certain class is all well and good, but what about the cut, colour and fit? Today with more choice of fabric, colour and styles in the horse world, there is much more chance to get your look wrong - and many riders do Not only will you come away from this book dressed to kill, you will also be completely colour coordinated with your horse with the help of a specially designed reference chart for shirts, ties, breeches, boots and jackets. One for the Christmas Wish List of Every Rider