Dennis Stock photographed memorable portraits of the icons of his time, from James Dean to Audrey Hepburn, pictured here on the set of Sabrina by Billy Wilder, in New York, in 1954.

Audrey Hepburn was many a photographer’s favorite subject, her pixie-like features and playful nature – on top of her celebrity – ensuring she was photographed extensively throughout her life. Among the most compelling of these images are those snapped on set while filming – which are captivating because, rather than in spite of, the fact that they depict an actress utterly absorbed by her craft.

Audrey Hepburn in New York City. 1954.