Liz Lange on Instagram: "Princess Diana on her wedding day. 1981. I will never forget this. It was the summer of ‘81, I was 15 years old and away at summer camp in Crans Montana Switzerland (which was one of the best summers of my life but I digress). The whole camp went to the dining room, as a special treat, where they wheeled in a TV so that we could all watch the wedding. It all seemed like a fairy tale to teenage me, marrying a prince, wearing a big confection of a wedding dress and a…