Brunet was born in the neighborhood of Gávea, in the city of Rio de Janeiro, Brazil. Her father, Armando Fernandez, is an Argentine businessman[4] and her mother, Luíza Brunet, is a Brazilian model. She owns a home in Ipanema.[5]
In July 2012, after about 7 years of dating, she married Brazilian model Evandro Soldati.[8] They divorced in early 2020. In 2020, Brunet married professional surfer Gabriel Medina. They divorced in January 2022.[9]
Brunet is an advocate for animal rights and is also committed to raising awareness about environmentalism, banned substances and humanitarian causes.[10][11] In May 2016, she revealed to be vegetarian for more than 7 years.[12]
In January 2024, it was announced she is a contestant in the reality show Big Brother Brasil 24. She was the 12th evicted with 80.76% of the votes in a eviction against physical education teacher Lucas Henrique Ferreira and dancer & digital influencer Isabelle Nogueira, finishing in thirteenth place.[13]
