Ko started her career at a young age by participating in beauty pageants.
She participated in productions on Canal 13 and had a brief stint on TVN, which became known for encouraging the children's program Arboliris.
She returned to Canal 13 to star in the TV series Marron Glacé.
She participated in theatrical productions such as The Vagina Monologues and in film.
In June 2010 she announced that she left Canal angel to migrate to Chilevisión and star in a dual role on the TV series Infiltradas.