Queen Elizabeth II just launch her facebook account. The account will post recent pictures of her majesty and royal, Charity events that she attended. 40,000 plus people already liked the page, pictures have been uploaded but the page just open today. It is not a personal account it is a corporate account.
The British Monarchy Facebook account
Two years ago the British Monarchy open the Royal Channel on Youtube, and last year they open a twitter account.
The official youtube account of the British Monarchy