Margot Cottens gained significant recognition for her role in the Argentine film Ayer fue primavera. This performance helped establish her as a prominent actress in the country's burgeoning film industry after years of success in theater.
Following her move to Spain, Cottens achieved immense popularity and a career resurgence with her role in the blockbuster comedy La ciudad no es para mí. This film cemented her status as a beloved character actress in Spanish cinema.