Born in 2001, Lucile Boulay trained at the Swedish Royal Ballet School in Stockholm and worked with Claire-Marie Osta, Patrick Armand, Gavriel Spitzen, Frédéric Carré and Monique Loudière. She worked with the National Ballet of Santiago in Chile before joining the Ballet Preljocaj Junior in 2019. In 2020, she joined the Ballet Preljocaj for the creation of Angelin Preljocaj's Swan Lake, before joining the permanent team in 2024.