With Yuki, I believe it's a case of 'You either love him or you hate him'.
I happen to love his unique designs... his technique to cut on a circle with a minimum of seams and shape a gown all in the draping is fascinating, and the result allows for a maximum of fluidity in movement, which of course gets somewhat lost on pictures.
The draping here is similar to the white Yuki gown of Queen Silvia (first worn in Japan, then in Portugal), but more elaborate, with different sleeves and a longer train.
I don't think the purple color is too bold for Queen Silvia, and all in all I like this style, somewhat archaic and modern at once, far better than the Queen's look for the main Nobel event this year.
I am uncertain about her hairdo as well, but so far, pics really don't provide a good view of it so it's difficult to tell...