See Charlene wears a lot of fashion forward pieces. I approve - if your job essentially is to be a sort of clothes hanger (note: on a more philosophical note I do not approve of women being viewed like that), then what are you going to do with that? One way is to promote fashion in some way. CPV has found her niche, wearing Swedish brands, but wearing items she clearly feels comfortable in - not too edgy, quite covered so no need to worry about wardrobe mishaps etc. Charlene wears a few - for royals - more unusual and edgy choices, like a model or a film star might, so she can set the agenda and be someone who actually sets trends maybe (which is what royalty used to do!).
Reading these threads and seeing so many people so unsatisfied with what the UK RF wear I think it might be a combination of not being showy enough (no spectacle), not being obvious trend-setters (having people copy your clothes is not the same thing as being cutting-edge in any way, and I think Diana came closer to challenging norms - but then the 80s were in some ways more permissible) and yet not obviously having the agenda of promoting UK designers/industry.
That is the kind argument. The unkind is that the British seem to just enjoy not liking stuff haha, so will never think "good job". The queen is just earning that at the age of 90+!