A coat of what?

Apparently, Kate Middleton is getting a new coat, a coat of arms. She probably wished for a new coat for the coming summer.  

Kate, officially Catherine, and Prince William are getting married the 29^th of April 2011 and she is provided with a traditional heraldic identity as she marries into the royal family. The crest is laden with symbolism. The gold chevron between the blue and the red refers to Goldsmith, Carole’s –Kate’s mother- maiden name. It also is a little pun, as it is in the middle, referring to Middleton. The blue and the red are the colours of the flag of the United Kingdom.

It is an old form of identifying yourself and it sits strangely alongside the arrangements for hi-tech wedding coverage.

An article from the Guardian: Kate Middleton's coat of arms blends in-jokes, symbolism and history http://www.guardian.co.uk/uk/2011/apr/19/middleton-coat-of-arms-symbolism 

In my opinion a coat of arms is a beautiful sign of your identity. In these modern times it is in so many ways possible to show your identity. Almost everyone has some kind of profile on one of the many social networks available. This profile shows who you are by the photos you present, the subjects you talk about, the interests you have listed and so on. It is a modern crest, but a crest that changes all the time. A coat of arms such as the Middletons have presented is one that lasts forever and rembers you always of who you once were.