She was born in Germany and moved to Cooma, Australia with her family at age 9 years. She was a finalist in the Dolly Covergirl competition, following which she began modelling when she was 15 years old. Seubert won the 1990 Ford Supermodel of the World contest at 17 receiving a $250,000 modelling contract with Ford Models. Following this she furthered her modelling, mainly in Paris.