Tomicic grew up in the commune of La Florida, Santiago, she completed her primary and secondary education at the Colegio Argentino del Sagrado Corazón de Jesús, in Providencia,[4] In 1994 she entered the Universidad Tecnológica Metropolitana to study design in visual communication, leaving her studies unfinished.

Her career as a beauty queen continued when she was crowned Virreina Sudamericana 1996 in Bolivia and Miss Atlántico Internacional 1999 in Uruguay.

In February 2006, Tomicic was presenter of the Viña del Mar International Music Festival, in 2007 and 2008 with Sergio Lagos.

[8] Tomicic is currently face and spoken celebrity of Almacenes Paris department store chain since 2005, as well as the Claro telecommunications company and has beene the Garnier's Chilean brand ambassador since 2007, where there is a dye called "Chocolate Tonka".

The couple were married according to the Jewish rite on April 16, 2014, in the city of Jerusalem, Israel, after Tomičić renounced Catholicism, thus embracing her partner's Judaism.