Dunn studied in London at Chelsea School of Art (1949–50) and at the Anglo-French Centre (1952) before going to the Académie Julian in Paris, France in 1952.
[3][4] From 1964 to 1968, she edited the journal Art and Literature with Rodrigo Moynihan, Sonia Orwell and John Ashbery.
[citation needed] Her most recent solo show was in 2005 at the Tibor de Nagy Gallery in New York.
[citation needed] Dunn's first husband was the artist Michael Wishart (1928–1996); they were married for 10 years before divorcing, and had one son.
[citation needed] Immediately after she and Wishart divorced in 1960, Dunn married Anglo-Spanish artist Rodrigo Moynihan (1910–1990), as his second wife.