In late 2006, it was announced that Jun would be making her long-predicted jump to Hollywood as the lead role in "". The international co-production, which was filmed in China and Argentina in 2007, is the live-action adaptation of a popular . She went through three months of hard training to play the sword-wielding martial arts heroine. During the filming and promotions for the movie prior to its 2009 release, she adopted the Westernized name Gianna Jun. Jun then launched her own luxury jeans brand in 2008, named "Gianna by True Religion", her first celebrity line. She was reportedly involved in every stage of their production, from design to deciding on fit and wash and their decoration with accessories.