What is Bridget Riley's most famous piece of art?

Opinions on what Bridget Riley's most famous work is differ. One of her best-known works is 1961's Movement in Squares, which had a major impact on the Op art movement. Other notable works by Riley include 1960's Pink Landscape, 1962's Blaze 1, 1985's Cupid's Quiver and 1989's Gaillard. On 1stDibs, shop a variety of Bridget Riley art.