[5][6] Delevingne's maternal grandfather was publishing executive and English Heritage chairman Sir Jocelyn Stevens.

[8][9] Delevingne is a muse and friend of fashion designer Matthew Williamson,[10][11] and previously shared a New York apartment with actress Sienna Miller.

[5][12] In October 2012, Delevingne became engaged to James Cook, a former model, who works for his family's aerospace company.

[16][17] In 2004, Delevingne was featured on the music video "Sunday Morning" by Maroon 5, as the karaoke singer in Japan.

[20] In 2020 Delevingne teamed up with her sisters (the older Chloe and the younger Cara) to launch Della Vite, an award-winning, sustainably-produced, vegan range of Prosecco wines.