Bree and Mitch got engaged in February 2018 after six years of dating.
The couple just recently relocated to Noosa, Queensland, and run a joint Instagram account 'Wave Provocateur'.
Bree, originally from Queensland, gained widespread popularity after leaving her promising basketball career to become a model.
"The life of a professional athlete wasn’t for me,” she previously told Women's Health.
With a dream to make "real size" the norm, Bree eventually moved to New York at the age of 25.
She has since landed jobs with ASOS, Revlon, Ralph Lauren and Garnier, as well as Aussie brands Lorna Jane and Tigerlily.