Taking to her Instagram, the gorgeous model shared a snap of herself at Melbourne Town Hall, alongside a telling caption to share the news.
"So excited & honoured to be back in #Melbourne representing @melbfashionweek as its official 2018 Ambassador 🖤 Thank you to my amazing team for such a great day!" she wrote.
This is the star's first big break after she wrapped up filming Home And Away earlier this year.
While Miller is known to avid TV fans as Constable Katarina Chapman, she has dabbled in modelling for brands such as GHD and Caltrate vitamins.
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