Maribel Guardia was elected Miss Costa Rica in 1977,
going on to represent her birth country at the Miss
Universe contest. She did not become Miss Universe, but
was selected as the "most photogenic" contestant. The
contest had been held in Acapulco, and she received
offers by Televisa producer Sergio Bustamante to develop
a career there.
Guardia moved to Mexico in 1980; this move proved to be crucial for her show business career. In 1980, she appeared in her first television show, alongside Loco Valdés.
Maribel Guardia went on to became a superstar all over Latin America, making multiple telenovelas and releasing a series of CD's in the Nortena music genre.
Maribel Guardia has acted alongside some very important actors, including Andres Garcia, Saul Lisazo, and Joan Sebastian. One of her major soap opera hits was alongside Sebastian. Together, they filmed "Tu y yo".
Maribel Guardia and Joan Sebastian were married for ten years, having a son together. After the couple divorced, they remained friends, to the point that Maribel Guardia often became Joan Sebastian's confidante and listener when he battled cancer.
Among the celebrities who declared themselves Maribel Guardia fans are Cantinflas and Pelé.
Apart from her jobs as an actress and singer, she has also modeled for various calendars, which are sold to her fans.