At the age of 12 she performed for the first time for King Alfonso XIII and Queen Victoria Eugenia at Sevilla Royal Alcázares.

Ignacio Sánchez Mejías, a famous Spanish bullfighter, realized Estrellita's vocal and dancing qualities at a charity festival and gave her a gold coin.

This enabled her to launch her career on an international level as she was successful in the main European cities and some Latin-American countries, where she became a popular idol.

She starred in 40 movies the most important of which were filmed in Germany- Suspiros de España, The Barber of Seville and Mariquilla Terremoto.

Estrellita Castro had her heyday in the 1930s and 1940s and she is considered to be the creator of what is known as Andalusian song or copla, a typical Spanish musical genre.