She has featured in a couple of fashion shows such as DKNY, Strenesse and Gregor Pirouzi. Petra came third in the Elite model look contest in 1999. She also appeared in the movie called “The Devil Wears Prada” which was a major hit back then. Petra has modelled for agencies such as Francina Models, Stars Model Management, Modelwerk, Ford Models - New York and IMG Models - New York, Faces-Malaysia. Petra has featured in several adverts such as Armani Exchange, Armani Jeans, Calvin Klein, Bailey Banks & Biddle Jewelers, Charles David and Frey Wille.