She is a highly successful boxer, being an Australian National Boxing Federation female middleweight title holder.

Harris was born and raised in Brisbane's northern suburbs and began playing competitive football for Aspley at age five.

[3] In 2017, following a move to Melbourne, she began playing in the VFL Women's competition with the St Kilda Sharks.

[5] At the age of 17, she was drafted to the Melbourne representative side as part of the AFL women's exhibition series.

[18] Harris was involved in controversy in March 2021 after it was reported that she missed part of her training in order to create an instagram post promoting her new documentary.

[24] Critics of the trolls included fellow AFLW players Erin Phillips and Darcy Vescio, Geelong player Patrick Dangerfield, cyclist Anna Meares, AFLW head of football Nicole Livingstone and Australian Football League chief executive Gillon McLachlan, and federal minister for women Kelly O'Dwyer.

[25][26] Phillips, Vescio, Meares and O'Dwyer joined the chorus of people condemning Seven's decision to remove the photo, which was perceived as yielding to the trolls.

[27] On 27 February 2020, Tayla Harris was announced as an ambassador for Our Watch, a national organisation tasked with preventing violence against women and their children.