Every year summer holiday at Balmoral, Queen Elizabeth hosts a party.
Royal Family's Annual Ghillies Ball at Balmoral
Queen Elizabeth travels to Balmoral Castle in Scotland for her summer holiday.
Princess Eugenie shared in the documentary
Our Queen At Ninety
Queen carries on a tradition started by her great-grandmother, Queen Victoria: the Ghillies Ball
"ghillie" is Gaelic for gamekeeper & Ghillies are specifically designed shoes
Ghillies Ball held Queen Elizabeth's grandfather King George V and father King George VI.
Scottish country dance where two women dance with one man.
Dancing starts at nine-thirty and goes on until about eleven-thirty
The event is private, so no photographs or video are typically released
Queen Elizabeth looks extremely happy. She wears the traditional tartan sash