Stella Tennant with artwork in “Surf and Turf Debutantes Palm Beach 1995” for Vogue Italia, March 1995. Photographer: Bruce Weber.

Tennant is the granddaughter of Andrew Cavendish, 11th Duke of Devonshire and Deborah Mitford, one of the well-known aristocratic siblings the Mitford sisters. Tennant was born in Scotland and attended St Leonards School in St Andrews. Her parents are The Hon. Tobias William Tennant, son of the 2nd Baron Glenconner, and Lady Emma Cavendish.