The Royal wedding was a perfect excuse for fashion watching. I got up really early to watch the guests arrive in all their sartorial splendour, and I wasn’t disappointed. The wedding guest style had everything, from the brights of Joss Stone and Tara Palmer Tompkinson, the Phillip Treacy hats that gave more than a passing glance to the style of the late Isabella Blow, the surprising elegance of Camilla Parker Bowles, and the extraordinary outfit choices of the Princesses of York. Here are my favourite outfits of the day, along with a few that may not become trendsetting. Ageless style Camilla Parker Bowles wore a beautiful Anna Valentine coat/dress. This…