Born in Liège (Belgium), Gaëlle Gillis studied dramatical art in the Royal Conservatory of Mons. She obtain her first leading role in 2015 for the movie "46XX" directed by Guido de Craene. The same year, she's nominated as "Best actress" in the Indie Film Festival of Ohio and won the award of "Best actress in debut performance" in the New York Independant Film Festival. In 2017, she play Nina in the movie "The Shadow Within" directed by Tiago Mesquita.