Britain's Princesses At Home In Buckingham Palace -- Princess Elizabeth, who is heir to the throne, settles down to some serious work at her desk. Seen among the businesslike desk equipment is a portrait of the Queen. These intimate pictures show Princess Elizabeth and her younger sister, Princess Margaret, in the privacy of their own room at Buckingham Palace, London. Daughters of King George and Queen Elizabeth, Princess Elizabeth is now 21 and Princess Margaret is 16. Their room, with windows looking out on the Queen Victoria Memorial, provides an interesting glimpse into the girls' interests. It has plenty of books, a piano - they are both fond of music - and a stamp collection. December 23, 1946. (Photo by Planet News Ltd.).