Her artistic career began at the age of 5, on July 1, 2003, when she competed in a contest made by the TV show “Rojo Fama Contrafama” in one of their galas. This gala was in the city Talcahuano and its purpose was to find the “double” of Maria Jose Quintanilla (member of the TV show “Rojo Fama Contrafama”), that is, another girl who could sing or resembles to the young singer who was known for her Mexican repertory. Christell sang the popular song “Mexico Lindo y Querido” and captured the hearts of the audience winning the contest. The five-year-old singer captures the heart of the nation.

Christell has not recorded a new album since her third one in 2004 at 7 years old, but she says her career has not stopped since she has kept singing, making concerts, composing new songs, playing different instruments and appearing on different TV shows where she is invited.

In 2005 Christell began a tour in Mexico, Puerto Rico and on the Latin communities of the USA, like Miami and Los Angeles, where she launched a special-edition-album with her greatest hits. During this tour the young singer earned a gold disc for more than 50,000 copies sold in Mexica. In November Christell was nominated to the Grammy Latino by her second album “La Fiesta Continua”. At seven years old she became the youngest singer ever to be nominated for the award.

During 2005 she made trips to Mexico, the United States and Puerto Rico to promote her career where an album was launched with the greatest hits of her first two albums.

In 2006 she took part in the TV show “La Movida del Festival” of Channel 13, (Chile) as a “Commentator” of the Viña del Mar International Song Festival. Her role was to give her opinion and point of view on this festival. This way, at eight years old, Christell became the youngest person ever on commenting the biggest Latin American Festival.

After an almost two-year-long pause (2006–2007), Christell re-appeared on 2008 as a ten-year-old actress on the Chilean TV channel Chilevision doing live theatre in the Theatre in Chilevision. In November of that year, she sang on the First Christian Music Festival.