Her mother, who was from San Francisco and Pasadena, California, was the daughter of Lt.-Col. Thomas H. Joyce, officer in the United States Air Force.
[2] Lowther started her career in fashion as a model, doing an advertisement campaign for Gap in the 1980s.
[3] She later founded the talent agency Camilla Lowther Management, also called CLM, in London in 1984.
The agency manages photographers, stylists, designers, make-up artists, and fashion models.
Lowther has represented Juergen Teller, Shonna Heath, Corinne Day, Josh Olins, and Tim Walker.