From the lighting of these photos, the hair color doesn't suit her at all IMO and adds to this.On the photos from the car, I'm curious to see how much blonder Kate has become. Initially I thought it was just the sunlight, but looking now I think her hair is much lighter than we've seen it before.
Separately, this is the first photo where I've thought she looks unwell- something about the slimmer face, but I hope that isn't the case.