Greta Goiris studied costume design at the Royal Academy of Fine Arts in Antwerp and set design at Institute del Teatre in Barcelona.
From 2001 onwards she collaborated with Johan Simons on numerous (music-)theatre productions amongst others for the Ruhrtriennale, Wiener Festwochen (2014), Burgtheater Vienna (2017, 2020) or Bochum Shauspielhaus. Also with Simons she designed the costumes for the operas „Fidelio“ (Beethoven) for Opera de la Bastille (2008) in Paris, „Herzog Blaubarts Burg” (Bela Bartok) for the Salzburger Festspiele (2008), „Alceste“ (Gluck) for the Ruhrtriennale (2016) and „Don Carlos“ (Verdi) for Opera Ballet Vlaanderen (2019). Greta also collaborated with directors Pierre Audi, Ivo Van Hove, Karin Beyer, Josse De Pauw and Peter Verhelst.
„Die Zauberflöte“ (De Munt, 2005) would be the start of a long collaboration with William Kentridge. They have collaborated on operas including „The Nose“ (Metropolitan Opera, 2010) and „Lulu“ (DNO, Metropolitan Opera, 2015, ENO 2016), as well as numerous installations and music theatre productions.