Marie-Jeanne was born and educated in Bucharest and is now based in London. She has designed costumes for opera companies throughout the UK and in Europe, including Vienna State Opera, Zürich Opera, Bavarian State Opera, the Bolshoi, Opéra Bastille, Deutsche Oper Berlin, Bregenz Festival, Opéra de Lyon, English National Opera, Royal Opera House, Welsh National Opera and Salzburg Festival. Operas for which she has designed costumes include Wozzeck, Der Ring des Nibelungen, Maskarade, The Greek Passion, Die Zauberflöte, Prince Igor, Carmen, Les Troyens, Moses und Aron, Khovanshchina, Il trittico, Turandot, Jenůfa, Katya Kabanova, Die Frau ohne Schatten, Lulu, King Roger and late 20th century works including Weinberg’s Die Passagierin and Zimmermann’s Die Soldaten. She has designed sets and costumes for productions including Falstaff and Pelléas and Mélisande (ENO), Carmen (Houston; Seattle; Minnesota) and Thérèse Raquin (Dallas). She is also known for her innovative and inventive puppet design, which features widely in her work for opera including Faust, Un ballo in maschera and Die Zauberflöte. Martinů Foundation awarded a medal for her costume designs for Martinů’s operas Julietta and The Greek Passion. She was nominated for a BAFTA for Amahl and the Night Visitors and was a member of the British team that won The Golden Triga at the 2003 Prague Quadrennial.