Dutch soprano Julia Westendorp has made a name for herself in recent years both in the Netherlands and abroad. She made her debut as Pamina at Opera Vlaanderen, and subsequently sang the part of Susanna with the same company. Other companies that engaged her include the Dutch National Opera, the Dutch Reisopera, the Royal Concertgebouw Orchestra and the Luzern Festival.

Other roles included Sylvia (L'isola disabitata, Dutch Reisopera), Nicolette (L'amour des trois oranges, National Opera), Barbarina (Le Nozze di Figaro, Dutch Reisopera), First Lady (Die Zauberflöte, The Fat Lady) and Erster Knappe (Parsifal, ZaterdagMatinee). In addition, she can be heard in various oratorio and concert repertoire, such as Bach's St John and St Matthew Passion, Bach Cantatas, Mozart's Requiem, Stravinsky's Pulcinella, Janáček's Glagolitic Mass, and The Bells by Rachmaninov

She has worked with conductors such as Jaap van Zweden, Louis Langrée, Jan Willem de Vriend, Bruno Weil and Tomas Netopil, and orchestras such as the Royal Concertgebouw Orchestra, the Rotterdam Philharmonic Orchestra, the Radio Philharmonic Orchestra, Camerata Salzburg and The Wallfisch Band

Over the years Ms. Westendorp has been successful in several competitions. In 2016 she was awarded the first prize at the Nadezhda Obukhova competition in Lipetsk, Russia. In 2012 she won two engagement prizes for solo recitals at the Swiss international singing competition Ernst Haefliger and subsequently made her début at the Luzern Festival and the Davos Festival. In 2009 she was awarded the Prix des amis du festival at the Aix en Provence Festival and in 2005 she was a first prize winner at the Nationaal Muziekconcours Stichting Jong Muziektalent Nederland, a prestigious Dutch competition for young musical talent.

Julia obtained her master's degree at the Dutch Opera Academy of the Royal Conservatory in The Hague where she received singing lessons from Charlotte Margiono. She obtained her bachelor's degree at the Fontys Conservatory with Hanneke Kaasschieter.