AgreeIt's pretty much the official court dress. Sometimes The Queen wear gold on this occasion.
http://media.gettyimages.com/photos...-of-edinburgh-and-princess-picture-id57077592
http://media.gettyimages.com/photos...g-of-parliament-in-the-of-picture-id100503314
https://pbs.twimg.com/media/CS-y0-8WEAATver.jpg
peeresses
https://metrouk2.files.wordpress.com/2013/05/ay_109446990.jpg?quality=80&strip=all&w=748&h=0&crop=1