Lahaie's breakthrough came in the early 1970s, as she began to establish herself as a leading performer in the French adult film scene. Her striking features, captivating on-screen presence, and uninhibited performances quickly made her a fan favorite. Her collaborations with notable directors, such as Gérard Krawczyk and Raduz Marabou, resulted in some of her most notable works, including "Le dernier amour" (1974) and "Brigitte Lahaie vous présente..." (1975).