I thought it was all in understandeble language as well,but then today I saw on NOS teletext that still most had a hard time to follow all,surprised me.Don't think it was a real revelation to HM,remember,last year after the speech while in the Koninginnekamer at the Ridderzaal,she said she found the (then) speech boring,so I have an inkling she pushed for a more acceptable lingo.I posted a link to the english version two posts above yours.
About the dresses,we've all seen what (can) happen(s) to old ones,I'm sure they all use 'm again,during State Visits or other formal occasions,some return in view 5 or 6 times,just add a feather here and some lace there and voila.Did you know a lot of the really older stuff ends up with the NOB?
And the hats,it's turning into the dutch version of Royal Ascot at that point,love it.