The twins were educated in the State Conservatory of Dokuz Eylül University in İzmir, and then attended the master classes of Lia Lantieri (1998), Katia Ricciarelli (2000), Dolora Zajick (2000–2003) and Plácido Domingo (2003–2004).
Sisters of Mercy | The Andrews Sisters | The Sisters of Mercy | Three Sisters | The Pointer Sisters | Sisters of Charity | Sisters of St. Joseph | Big Brothers Big Sisters of America | Sisters of Notre Dame de Namur | Three Sisters (play) | Sisters of Providence | Marist Sisters | Boswell Sisters | Sisters | Little Sisters of the Poor | Franciscan Sisters | Brothers and Sisters | Wyrd Sisters | Viennese Singing Sisters | The Lennon Sisters | Sisters, Servants of the Immaculate Heart of Mary | Sisters of the Immaculate Heart of Mary | Seven Sisters station | Lane Sisters | Big Brothers Big Sisters | A Tale of Two Sisters | the Lennon Sisters | Sisters of the Little Company of Mary | Sisters of St. Francis of Perpetual Adoration | Sisters in Crime |