I liked Kate's dress but it's nothing special or to go crazy about. Its safe, nice colors and a nice length. I think she looked much nicer the Michelle Obama. What I wished for with this dress was a more fun heels, these are too old looking for her.
I thought the blue chiffon dress was perfect hostess dress for entertaining in your own home, elegant by not overly accessorized. Flowy skirt is easier sitting on soft seating. I thought she looked very comfortable in her home
If it is raining and not cold you don't need a coat, also she was just outsider her home so no need for a coat. I think she looked fine , why everything has to be amazing is beyond me she is dressing for her role.