Britain's Queen Elizabeth II meets well wishers during a walkabout close to Windsor Castle in Berkshire as she celebrates her 90th birthday on Thursday. (John Stillwell/PA via AP)

It’s not a problem one faces everyday: What kind of present do you give a nonagenarian who lives in castles and is arguably the world’s most famous royal? The thick crowds that lined the streets in Windsor on Thursday, where Queen Elizabeth II is celebrating her 90th birthday, opted for flowers (lots of carnations, said to be the monarch’s favorite), cakes (one shaped like a corgi), cards (many homemade) and a giant stuffed bulldog/Karla Adam, Washington Post. More here.

Question: As an American, what do you think of Britain's queen?