Became known for her work as the title role of the Nickelodeon series Grachi, for which she sang the soundtrack.
She began singing at age five and won the first place prize as well as the Most Promising Artist Award at the USA World Showcase MGM.
She won a 2013 Kids' Choice Award for Favorite Latin Artist.
Her mother was a singer named Delia Díaz de Villegas and her father, Jose Castillo, was a percussionist. She has an older sister who is a musician as well.
She co-stars with Sol Rodriguez on Grachi.