At a little under four years old, Muñoz shot her first motion picture, starting a career of starring roles as a child talent; beginning with a minor role in
El secreto del sacerdote in 1941. After playing the character Chachita in her second movie,
¡Ay, Jalisco, no te rajes! (1941), she received the nickname "Chachita". Around 1944, her popularity in starring in her movies led to her starting a radio career in the radio show
La legión de madrugadores on the
XEQ radio station. In 1947, she signed a contract with
CBS in New York to star in the radio serial:
Aventuras de una niña, which was broadcast in all Central and South America, and produced by
Carlos Montalbán. During the mid-1950s, she played all the female roles in Panzón Panseco's radio sketches, along with Pedro Vargas, and Juan García Esquivel's orchestra (1957): "Ahora es la hora". In the late 1950s, she starred in the show
El Risámetro. To promote her movie
La Hija del Payaso (1946), in which she performed along with trained elephants and dogs, Muñoz learned to play the
marimba and the
xylophone. She made personal appearances with the Atayde Circus when she was only eight years old. During her teenage years, she costarred with
Pedro Infante in the trilogy:
Nosotros los pobres (1948),
Ustedes los ricos (1948) and
Pepe el Toro (1952). She was invited by
Pérez Prado as a
mambo dancer for a tour all over the
Philippines and
Japan where she became a sensation. During that tour they also performed in
USO shows during the
Korean War for the
Hispanic-American soldiers. In the 1970s Muñoz played the role of "Sister Carmela", a novice nun in the Mexican versión of the
soap opera Mundo de Juguete. In 1975, she starred in the variety show
Un hombre y una mujer with
Fernando Allende. She appeared as a guest star on episodes of various American television shows, including
Columbo and
I Spy, as well as live performances in the
Million Dollar Theatre in Los Angeles, California. During the 1980s, she played the role of the witch Hermelinda Linda in several films. On television, she co-starred with
Jorge Ortiz de Pinedo in the sitcom
Dos mujeres en mi casa. In 1986, she co-starred in the sitcom
Nosotros los Gómez. In the 1990s, Muñoz continued working in a series of soap operas for
Televisa, as well as making films such as
De lengua me como un plato. She played a nun from northern Mexico in
Cambiando el destino with the band Magneto. In the 2000s, Muñoz starred in several episodes of
Mujer: Casos de la vida real and lent her voice to CGI animated characters.
2010s In 2008, Muñoz played a role in Televisa's soap opera
Cuidado con el ángel that was broadcast all around the globe and appeared in the 2011 season of
Sesame Street – Mexico. In 2016, Muñoz celebrated 75 years of an uninterrupted artistic career. For her countless contributions to the Television, Theater and Motion Picture industries, Muñoz' handprints have been embedded onto the
Paseo de las Luminarias in
Mexico City. == Personal life ==