50% sureLots of sources credit Audrey Hepburn with this, and they agree with each other. The book or the speech it first came from hasn't turned up yet.
What turned up
Attributed; sourced only to Audrey Hepburn: A Life in Pictures (Dherbier & Verlhac, 2007) — a posthumous compilation, so held at likely (no lifetime publication located this pass).
Work
collected in Audrey Hepburn: A Life in Pictures (Dherbier & Verlhac, 2007)
Occasion
reflecting on what fame had and had not changed
Sources checked
en.wikiquote.orgChecked using claude-fable-5, 22 August 2026Wikiquote sources it only to the 2007 posthumous pictorial collection — compilation class, not verified-grade. Wording stable across the record; sentiment distinct from the pack's success quotes (Churchill, Edison): hers is that success does not transform you.