Balmoral, Scotland: A mother and her two daughters all wearing tweed jacket and kilted skirt strides out along the lonely public raod from Straunyarroch Hill to Crathie. look again and you'll see that it's the Queen (centre) with Princess Elizabeth and Princess Margaret. Accompanied by women friends, they were hiking back to nearlby Balmoral after picnicking on the moors. The picnic was one of the ways in which the Royal Family (The king was out grouse shooting with the Duke of Edinburgh, the Earl of Dalkeith, and Mr Billy Wallace) celebrated the 21st birthday of princess Margaret 22nd August 1951