Born in Vallo della Lucania, Agresta obtained her diploma at the Conservatorio Giuseppe Martucci [it] in Salerno with top marks and then completed her studies with Raina Kabaivanska in Modena.

In 2006 she made her debut in Spoleto as Rosina in Il barbiere di Siviglia and then appeared as Selene in Baldassare Galuppi's Didone abbandonata.

[1] Since then she has also sung at La Scala in Milan and other important opera houses such as the Teatro dell'Opera di Roma, La Fenice in Venice, the Bayerischen Staatsoper München, the Staatsoper Unter den Linden Berlin, the Semperoper in Dresden, the Royal Opera House London and the Palau de les Arts Reina Sofía Valencia.

In 2015 she appeared for the first time at the Salzburg Easter Festivals with Jonas Kaufmann in the role of Nedda in Pagliacci.

[3] At the Salzburg Festival in August 2016 she made an acclaimed role debut in the French repertoire as Marguerite in Gounod's Faust.