Today, impressive simulation technology is available, allowing the creation of virtual garments that look incredibly realistic. Experimental values for the mechanical fabric properties can be derived from standard fabric characterization experiments. These methods have, however, not been designed for use in simulations. This study examines the accuracy of derived fabric parameters from standard measurement methods. Therefore, fabrics are measured and derived parameters are evaluated for static and dynamic virtual garment simulation. For those measurements which are found to be unsuitable, new methods are developed. A prototyping process is developed to compare both the real and virtual processes. It is demonstrated that typical garment assessments such as comfort and utility performance can be accurately simulated. Moreover, important numerical fitting data attest a better performance in the virtual process. The new measurement specifications are leading to the establishment of new measurement standards, which are designed for virtual simulation processes.