Rouillard was born in Popayan, Cauca, Colombia to a French father, Patrick Rouillard and Colombian mother, María del Mar Estrada.[5] Within her studies, it stands out that she is a professional in International Business from Concordia University in Montreal, Canada. In addition to her native language, Spanish, she also speaks English and French.[6] She also studied acting her first role as an actress was in the telenovela La teacher de Inglés. As for her career as a model, she has participated in different catwalks, she is part of the stock models agency.
Michelle has shown herself as an admirer and practitioner of the esoteric arts and astrology, in January 2022 declared that she is a specialist in Vedic astrology and that since she was a child she felt a great inclination for esotericism and also being very young she made the astral chart, Curiously, she remembers that nothing that was read to him became reality.[7]
On November 17, 2008, Rouillard represented her native Cauca department in the Miss Colombia 2008 held at the Barahona Auditorium, Julio César Turbay Convention Center, Cartagena, Bolívar.
During the special award ceremony she received the special award, Miss Photogenic.
