That cardi is fug. But, for the record and because it's what we are all brainwashed encouraged to do, here is my standard Mumsnet response:
Ooh, she looks lovely. I'd look terrible in it, all overweight and common!
I best she gets William to [insert banal everyday activity here] while she wears it and does ever so many normal mum things like the rest of us, but in a beautiful and ironic way.
I don't mind her spending £26373846 on clothes using all the cash leached from dubious financial arrangements over 1000s of years.
Arf arf, gawd bless them one and all!
Shed a small tear, rearrange commemorative plates of Andrew and Fergies wedding.