Thank you for these beautiful photos. The brooch Isabella wears in her hair is so distinctive in shape, and so similar to that shape (and size) to her mother Princess Mary's hair brooch, that I think they are likely the same. Easy for a strand of hair or an angle to hide one of the stems, but the two pieces are so much alike that I wouldn't think it's a coincidence. I'm no authority though!

What I'm struck by is the beautiful posture of all three younger children of the Crown Prince couple.

Thanks again.