Career
She participated the first time in 2011 in the Mission Chile competition, and placed 1st runner-up. A few months later, the organization selected her to represent the country in Reina Hispanoamericana, held in Santa Cruz, Bolivia. At the age of 11 she left Chile and moved to Mexico City in 2004 due to her father"s diplomatic job where they stayed for two years.
In 2006, she was sent to do her first two years of high school to a traditional boarding-school in England where she also stayed for two years.
MJ"s last two years of high school where spent in Miami (2008-2010). At the end of 2010 was when she returned to her home county Chile, this was when her modeling career started.
In 2013 MJ started studying Fashion Design at University of the Pacific. Apart from the Mission Universo Chile title, at the beginning of 2014 she debuted in the television business in Chile with the show A todo o nada in Mega where she was one of the models of the game-show.
Around June 2014 she started working as a panelist in a Late Show called "El Show despues del Late" in VTR cable channel in Chile.
In October 2014, Matthei participated in the reality show casting Initially she was chosen, but brought opposition from the audience, being dismissed from the show in the very first episode.
