She was educated at home by a series of governesses, except for a six-month period in 1926, when she was sent to a day school in Paris. In childhood, her younger sisters Jessica Mitford ("Decca") and Deborah ("Debo", later the Duchess of Devonshire), were particularly devoted to her. At the age of 18, shortly after her presentation at Court, she became secretly engaged to Bryan Guinness. In her youth, Mitford was considered part of the social set known as 'The Bright Young Things'.
She was educated at home by a series of governesses, except for a six-month period in 1926, when she was sent to a day school in Paris. In childhood, her younger sisters Jessica Mitford ("Decca") and Deborah ("Debo", later the Duchess of Devonshire), were particularly devoted to her. At the age of 18, shortly after her presentation at Court, she became secretly engaged to Bryan Guinness. In her youth, Mitford was considered part of the social set known as 'The Bright Young Things'.