Luckily, Queen Alexandra, like Queen Mary and Missy, enjoyed having her photo taken and many were published--she was the Diana of her day for newspapers and illustrated magazines. I've picked up a good number, even though I was just outbidded for 2 really nice ones the other day.
Here's one of my favorites--I like the longer hair though, like Diana, it didn't last long and she went back to her signature style. I think this one was in Royal Cabinet Cards. Plus, I know it was posted on here by someone else but I can't remember who or where--I usually try to 'quote' an image. My apologies to the original poster.