Livia Pastore was born in Italy in 1988 and graduated from the Academy of Fine Arts of Naples and the Italian School of Comics "Comix" in 2010. She started to draw for the publishing house GG Studio during her studies, from 2009 to 2013.
In 2010, she worked on the detective story project Nero Napoletano, published by the Italian newspaper Il Corriere. As a cover artist and illustrator for GG Studio, she created the fourth and final issue of the successful series Route des Maisons Rouges, the fifth book of Mediterranea and the first three books of Extinction Seed for the American market. She then took the lead on Big Dog Ink's Knightingail project, producing the third series, entitled "Dawn of Destiny". In the same years, she worked on Jabal Entertainment's graphic novel, Blades of Hope. In 2016, she began working for the Canadian publisher Red 5 Comics on the dark thriller Keyser Soze: Scorched Earth, a sequel to The Usual Suspects.
In January 2021, she collaborated with Nicolas Mitric and Gihef on the third volume of the saga Sirens of the Norse Sea for Humanoids, an opportunity for her to draw her favorite characters, namely mermaids.