@UKTI via Flickr
But Kate's not the first royal lady this year to give us a bit of burgundy lace. And her choice looks rather familiar alongside some of the others chosen in 2015. First there was Queen Letizia who chose a cocktail dress with flared skirt for one of her engagements in France during the State Visit she paid this summer with her husband.
As did the high neck and lace effect - a real departure for Kate and one that would be good to see again.
The duchess proved that this particular shade and style has a regal touch that adds a whole layer of royal glamour to any engagement. So don't be surprised to see more royal ladies try this look - we could get very used to burgundy lace.