Somewhat rebellious in nature, she was pulled out from Slade School of Fine Art, where she had been studying to be a painter, by her mother due to her making "unconventional" life choices.

As a teenager, she took a job at Foyles to prove her independence, to which the Evening Standard reported a story with the headline Peer's Daughter Works For A Living.

As a married woman, Delevingne spent time in Venice as part of her sister-in-law Viscountess Castlerosse's entourage, where she was introduced to Prince Philip of Greece and Denmark.

She and her husband were also frequent guests of Hollywood stars including Clark Gable, Paulette Goddard, and Charlie Chaplin.

Delevingne was born Angela Margo Hamar Greenwood on 8 July 1912 in London to Hamar Greenwood, a Canadian-born British politician and lawyer, and Margery Spencer, an officer of the Most Venerable Order of the Hospital of St. John of Jerusalem, Chairwoman of the Women's Section of the Comrades of the Great War, and descendant of Robert Spear Hudson.

On 8 February 1915, her father was created a baronet, of Onslow Gardens in the Royal Borough of Kensington in the Baronetage of the United Kingdom by George V. In 1922 her mother, then styled as Lady Greenwood, was made a Dame Commander of the Order of the British Empire.

As a child, Delevingne had to be carried down the stairs by a butler in her family's South Kensington home to take shelter during a Zeppelin raid in the First World War.

[3] Her father served as the last Chief Secretary of Ireland from 1920 to 1922, during which time she and her siblings were given police protection owing to fears about attacks from the Irish Republican Army.

[12][13] After meeting Prince Philip, who the following year would be introduced to his future wife, Princess Elizabeth, Delevingne reportedly said "he’d make someone a very good husband one day.

"[14][15] As a married woman, Delevingne made visits to Hollywood and befriended Charlie Chaplin, Paulette Goddard, and Clarke Gable.