Niki de Saint Phalle  (1930 – 2002) was a French-American sculptor, painter, filmmaker, and author of colorful hand-illustrated books. Widely noted as one of the few female monumental sculptors, Saint Phalle was also known for her social commitment and work.

Saint Phalle's idiosyncratic style has been called "outsider art"; she had no formal training in art, but associated freely with many other contemporary artists, writers, and composers. Her books and abundant correspondence were written and brightly-colored in a childish style, but throughout her lifetime she addressed many controversial and important global problems in the bold way which children often question and call out unacceptable neglect.

A critic has observed that Saint Phalle's "insistence on exuberance, emotion and sensuality, her pursuit of the figurative and her bold use of color have not endeared her to everyone in a minimalist age".  She was well known in Europe, but her work was little-seen in the US, until her final years in San Diego. Another critic said: "The French-born, American-raised artist is one of the most significant female and feminist artists of the 20th century, and one of the few to receive recognition in the male-dominated art world during her lifetime".

3-D Lenticular Postcard by artist Juan Carlos Espejo.  See second image to get some idea of the depth seen when the card is tilted.