Miranda started her career in modeling before she left high school, when she won the Dolly Magazine competition in 1997. Her young age, at the time, sparked controversy but Miranda went back to her home town in country Australia and finished her studies and then went on to study Nutrition and Health Psychology, at the Academy of Natural Living.
Miranda's career has consisted of a mix of high profile runway shows, fashion and beauty shoots, as well advertising in television and print. She has appeared on the covers and inside pages of numerous magazines, including British Harper's Bazaar, British GQ, Vogue, Marie Claire, Vanity Fair, the cover of Rolling Stone, Harpers Bazaar, Madison, Italian Glamour, Elle and recently editorial in V magazine, US Marie Claire, US Glamour and the cover of Harpers Bazaar Australia and Pirelli calendar.
In 2008, Victoria's Secret signed Miranda as its newest Angel. She was the first Australian model ever to appear in a Victoria's Secret runway show. She consistently appears in print and television advertising campaigns as well as their runway shows. Her campaign work includes Victoria's Secret, Maybelline, Levi's, Blumarine, Clinique's "Happy" fragrance and she is the face of the Australian department store David Jones. Miranda has also graced the runways for designers such as, Balenciaga, Anna Molinari, Roberto Cavalli, Comme Des Garcons, Blumarine, Issey Miyake and many more.
Miranda now lives in New York and has established herself as one of the top 10 models in the world and someone who cares passionately about health and well-being. She balances her hectic lifestyle with yoga, meditation and regular exercise. Later this year Miranda has a book coming out "Treasure Yourself". It focuses on encouraging young women to embrace themselves and their individuality.