Charlene is criticized if she do things like Grace and criticized if she do it differently
I like the modern touch of her dress.I highly doubt that it's Charlene who decided to change the national costume.I think there is "une couturière" in Monaco or Nice who decided to design it that way and Charlene liked it.
I agree with those who say that traditions don't have to be frozen.
Unfortunatly westen national costumes remain so unchanged that new generation don't care for it.Those costume are displayed only for the folklore or in museums
From what I see here in France,some national costumes are still worn by the younger generations mainly in family events(eg weddins) or even outside because they were modernised.That's what I see in african,indian,north african communities.
The younger generation no longer want to wear their grandmother's dress but a modern dress with some details from the traditional one.
Some royal houses are doing well in wearing modernised versions of their national costumes:Jordan,Morocco,Buthan
I am not jordanian or moroccan or buthanese or Monesgasque,but I am more likely to wear a modernised traditional dress of these countries than an old fashioned traditional one