Sorry to derail but I was just reading Listverse and came across this little snippet:
"But when it comes to style, Queen Elizabeth outshines them all. Attended by a team of fashion experts, the Queen’s outfits are listed in a computer program which keeps track of when she wore what and why. This way, she never wears the same thing to the same kind of occasion twice. Her attendees even have nicknames for her clothing, like a yellow dress they’ve codenamed “buttercup.”
Extra precautions are made to take care of the royal feet. As the Queen can’t exactly slip off her heels in the middle of an event, her designers have to make sure her shoes are as soft as possible. To achieve maximum comfort, the Queen has a servant break her shoes in until they’re nice and comfy. It’s one of the little perks that comes with being a queen."
I know we've speculated about how the RF keep track of their clothes, so it seems those who thought a computer programme / app were correct!