Mia is her mother Alex Fevola's eldest child, from a previous relationship, and has three other half-sisters, Leni, 12, Lulu, eight and baby Tobi.
Brendan and make-up artist Alex first married in 2005, but ended their on-and-off nine-year marriage in 2014. However, in 2016, they got back together and announced their engagement that same year.
Taking to Instagram earlier this month, retired AFL star, Brendan wrote a gushing tribute on Mia’s 20th birthday.
Happy 20th Birthday Moo now your [sic] no longer a teen it’s time to start paying rent 😀. Have an amazing day your [sic] an amazing daughter and an even better big sister we are all so lucky to have you in our lives. We love you to the moon and back ❤️❤️❤️❤️.