I agreed with your previous post Bednobs, I often look at the DoC and marvel at how she has managed to take a supposedly on trend dress/coat/whatever and make it look like something my granny would turn her nose up at. She has an uncanny knack of ageing herself with her choice of wardrobe.
I have to disagree with you regarding last nights dress though. I don't think it fits her terribly well, particularly around the arms and the neck seems a little to high. I don't think the gathering of the bodice at the back is flattering and the hemming is visible, overall I think it has the potential to be a nice dress but needs some refinement.
I also have an issue with the DoC's shoe collection, which seems very limited, personally I think a little kitten heel would have complimented the dress better.
Overall I think she looks her best when wearing jeans and a Barbour jacket, the moment she has to dress up she adds ten years to her age.