You know, a lot of these items (especially from the beginning) would be considered frumpy and dated (and they are, lets get real) but I can CLEARLY assign a mental image of when she wore each piece. We are interested in the clothes not necessarily for the construction and design value but for the association with the woman who wore them. Do you really think people will want to see a retrospective view of Kate's blue Issa shift she wore for showing off the ring previously owned by this woman?
Speaking of Issa - I never noticed how much that wrapover effect was used previously by Hartnoll (?) and employed by Issa. Kate was SWF Diana long before.
And more speaking of Diana - for various reasons I was recently watching some documentary on the making of Live Aid (don't judge! huge Ultravox fan here

) and how all the artists lined up and she and Charles met them all before taking their seats for a few hours. Sure Chuck looked stiff but she was interested and engaged - such a difference from today! No gurning, no posing or flashing, just doing her job but making even those (at the time) superstars pale in comparison to her presence.