Kathleen Esther Garman, Lady Epstein was the third of the seven Garman sisters, who were high-profile members of artistic circles in mid-20th century London, renowned for their beauty and scandalous behaviour. She was the model and longtime mistress of British/American sculptor Jacob Epstein, and eventually his second wife. They met in 1921 and immediately began a relationship that lasted until Epstein's death and produced three of Epstein's five children. Their daughter, Kitty Garman, was the first wife of Lucian Freud; their son was the artist Theodore Garman.

Sir Jacob Epstein was an American-British sculptor who helped pioneer modern sculpture. He was born in the United States, and moved to Europe in 1902, becoming a British subject in 1910.