One of the amazing blogs on the Duchess of Cambridge/Kate Middleton that I follow is From Berkshire to Buckingham. Jane Barr, who runs the site, has just opened up a new site, and I must say it is every Kate fan's dream!
Click on photo to enter site
The format is clean and easy to look at. You can search for any outfit and by clicking on it can see at a glance where it was worn, when, the designer... it's amazing! Now, when an article mentions, lets say, a piece of jewelry Kate wore but doesn't show a picture, I can just look it up!
You can click on any individual item or designer and it will bring up a list of all the times that item was worn or all the pieces by that designer Kate has worn.