Interesting link to KM’s shoes. I reckon some of the suede ones, especially the boots and booties, are her own free choices from pre-marriage. I’ve loads of designer and LK Bennett shoes (from when I was younger and a good few years before KM became known), which I still wear and which are still in excellent condition. Quality lasts.
That probably goes for Anne’s clothes. They were probably jolly expensive at the time, and not highly stylised. So if they still fit and are in good condition, why not wear them?