Christine Carol Newby (born 4 November 1951), better known as Cosey Fanni Tutti, is an English performance artist, musician, and writer, best known for her time in the avant-garde groups Throbbing Gristle and Chris & Cosey.
Tutti first performed under the name Cosmosis. According to Throbbing Gristle biographer Simon Ford, the name of Cosey Fanni Tutti was suggested to her by mail artist Robin Klassnick based on the title of the opera Così fan tutte, literally meaning "That's what they all do"— they being women, hence, "That's what all women do".
