She appeared in more than 70 movies, earning best actress awards from the Argentine Academy of Motion Picture Arts and Sciences and the Spanish Cinema Writers Circle.

Zulema Esther González Borbón was born on 17 October 1920 in the town of Villa Ballester, part of the General San Martín Partido in Buenos Aires Province, Argentina.

[3] She made many visits to the theaters in search of parts, and in 1938, answering a notice for extras,[2] she was hired for a minor role in Cándida,[4] under the direction of Luis Bayon Herrera[5] and starring Niní Marshall.

The Hollywood-style, big budget production, with haute couture costumes gave her a glamor like few other actresses had at the time[6] and led to a style that became known as "cine de los teléfonos blancos" (cinema of the white telephone).

Stella was followed with roles alongside some of Argentina's biggest stars, including: Pedro López Lagar in both Apasionadamente (1944) and Celos (1946); Angel Magaña in Nunca te diré adiós (1947); and Arturo de Córdova in Dios se lo pague (1948).

[4] She continued working in Spain, filming Madrugada (1957) with director Antonio Roman,[8] for which she won the Círculo de Escritores Cinematográficos (CEC) (Cinema Writers Circle) award for Best Actress.

[14] That same year, at the Film Festival San Sebastian, Moreno received the award which typified her screen persona, with a certificate honoring her as most elegant actress.