Daughter of industrialist Theodoros Karellas, she was born in Athens on 17/7/1940. She started to study painting at the Vacalo Art and Design College with Panayiotis Tetsis as her teacher, while for a period of time she was a student of Yannis Tsarouchis. She continued her studies at the School of Fine Arts in Paris (Ecole des beaux-arts, Paris) (1963/65) and at the Salzburg International Summer Academy of Fine Arts O. Kokoschka (Internationale Sommerakademie für Bildende Kunst Salzburg O. Kokoschka). In 1965 she married prince Michael of Greece, grandson of King George I and Queen Olga. She first presented some of her visual works at the Festival of the Two Worlds (Festival Dei Due Mondi) in Spoleto (1966) and at the Galleria Levi in Milan (1971). During the 1970s she was staying in Paris and exhibited her famous White Boards at the Gallery Iolas. Later she started working on carving folds on plaster, marble and metal. In the 1980s she moved to New York where she collaborated with famous contemporary artists. During her successful international career she exhibited in New York, Los Angeles, Madrid, Brussels, London, Rome. In Greece, she held at least 30 personal exhibitions, while in 2005 a retrospective of her work was organized by the Benaki Museum. She made sets and costumes for movie films and theatrical performances. She collaborated, among others, with the sculptor Takis for the performance of Electra in Epidaurus in 1984 and with Niki de Saint-Phalle in her film A dream longer than the night [Un reve plus long que la nuit] (1976). Her works are exhibited in the Goulandris Museum (Andros), the Museum of Modern Art (Musée d'Art Moderne), the Centre Georges Pompidou in Paris etc. With the Greek National Opera she collaborated as a set designer and costume designer in the opera L’incoronazione di Poppea, directed by Minos Volanakis (1977/78, 1978/79). // Last update of the biography: March 2020 - The list of the productions below is complete.