She moved into No. 10 Kensington Palace after marrying photographer Anthony Armstrong-Jones, later Lord Snowdon, in May 1960.
Two years later, after the birth of the couple’s first child, Viscount Linley, the family moved into Princess Margaret's former apartment. This apartment had been occupied by Princess Louise until her death in 1939. The apartment was radically altered. Its opulent decoration reflected the couple’s love and knowledge of the arts and theatre.
The couple’s second child, Lady Sarah, was born at Kensington Palace on 1 May 1964.
Princess Margaret and Lord Snowdon divorced in 1978 but the Princess continued to live at Kensington Palace until her death in February 2002.
The management of Princess Margaret's former apartment was transferred to Historic Royal Palaces not long thereafter and the principal rooms of Princess Margaret’s former home were opened to the public in June 2004.
The Snowdons’ circle of friends that attended receptions and parties at the palace included the fashion designer Mary Quant, the hairdresser Vidal Sassoon, the actors Peter Sellers and his wife Britt Ekland and the dancers Rudolf Nurejev and Margot Fonteyn.