I've just discovered this forum, and I'm so excited! Now I can discuss this stuff, without boring all my friends.
I too have been working for years at trying to provide the exact dates for every photo of Diana. I thought I was an expert on Diana's clothes and when she wore them, but some of you are way ahead of me, especially Canadiana and Squidgy.
Canadiana, I am in awe of your accomplishment, your knowledge, and your organization. However, I have a few quibbles. First of all, you've posted the same photo twice and assigned it two different dates. In Post #83 of this thread, you show a b/w photo of Diana in her raspberry suit, dated Mar. 13, 1984 (at Hammersmith Hospital). But in Post #106, you have the SAME PHOTO, this time dated Mar. 27, 1985 (at a luncheon at Fishmongers Hall). One of them can't be right.
You know that pink ruffled gown Diana is wearing in Post #78 of this thread, in May 1983? I think that's the dress she wore at the private ball the Monday night before the wedding. As far as I know, there are no photos because it was a private event, but Mary Robertson was there. She was the American who employed Diana before the engagement as a part-time nanny for her baby boy, and in her book The Diana I Knew she says that Diana wore a deep pink ruffled gown at the ball. As soon as I read that, I thought of this dress. Does anyone know if there WERE any photos of that night?