Buckingham Palace announced that the wife of the Queen's grandson Peter Phillips has given birth to a daughter.
Autumn and Peter Phillips' first child, whose name is yet to be confirmed, weighed 8lbs 8oz when she was born at Gloucestershire Royal Hospital.
A statement from Buckingham Palace read: "The Queen, the Duke of Edinburgh, the Princess Royal, Captain Mark Phillips and Autumn's family have been informed and are delighted with the news."
The baby is the first child for Mr and Mrs Phillips, the first grandchild for the Princess Royal and the first great-grandchild for the Queen and the Duke of Edinburgh. She is 12th in line to the throne.
Mr Phillips was present at the birth.