Cox was announced the winner of Australia’s Next Top Model, Cycle 7 at the Sydney Opera House on 25 October 2011, defeating Liz Braithwaite and Simone Holtznagel in the final. She is the second winner hailing from Victoria, with the previous Victorian winner being Alice Burdeu of Cycle 3.
As the winner, Cox appeared on the cover of Harper’s Bazaar Australia, as well as an eight-page spread in the magazine. Her other prizes included a modelling contract with Chic Model Management, twenty thousand dollars in cash, a Ford Fiesta and an overseas trip to New York City to meet with NEXT Model Management.