Irma Consuelo Cielo Serrano Castro was a Mexican singer, actress and politician. Famous for her "tantalizing" "untamed spitfire" voice, she was one of the most noted performers of the ranchera and corrido genres; she was nicknamed La Tigresa de la Canción Ranchera and later known simply as "La Tigresa". At the same time, she pursued a film career with more than a dozen films. At the time of her death, she was one of the last surviving actresses from the Golden Age of Mexican cinema.
In the 1970s and 1980s, Serrano achieved great success as an actress and producer in a series of controversial stage plays, especially the controversial play Naná. In the 1990s, she also ventured into politics and occupied a seat in the Mexican Senate.
In her later years, she was the center of multiple scandals and controversies. She appeared in celebrity gossip magazines and television shows because of her political career as senator for her home state of Chiapas from 1994 to 1997.