Shenstone's portraits exist in some of today's most prominent public and private collections including The National Portrait Gallery and The Sir Robert and Lady Sainsbury collection. Shenstone has been awarded the Brian Sinfield Fine Arts Award (2000) and the Public Choice Award, Hunting Art Prize (2001). Shenstone began her career as an artist, following her graduation from the Royal College of Art in 1979. Her portraits have since become internationally renowned, particularly those of Francis Bacon, her mentor and subject for many years.