At the age of 21, Honorine Magnier joined the Cochet course. She stayed there for two years. During this period, she had her first theatrical experiences, notably in Le Malade imaginaire , directed by René Camoin where she played Angélique . She will then spend a year at the Sudden workshops. While she has just passed the competition for the Studio-théâtre d'Asnières , Honorine Magnier prefers to accept the role of Valentine in the play Lady Oscar alongside Amanda Lear , and begins a long tour. She then goes on to perform roles intelevision series , such as My Worst Anguish or Les Petits Meurtres by Agatha Christie and in short films. After a new stint in the theater in the play Nelson , where she crosses paths with Chantal Ladesou and Armelle , Honorine Magnier was chosen in 2017 to play Rose Orsini in the TF1 series, Research Section. After having played in 28 episodes, she left the series in 2021 and then joined the cast of Tomorrow belongs to us on the same channel.