Fit is one of the major concerns for the clothing industry, and pattern development process is significant during clothing manufacturing and the way clothing is constructed. Various pattern making methods have been introduced to the industry considering clothing fit satisfaction, but it is still impossible to provide the optimized clothing pattern for mass production. The aim of this paper is practical implications about 3D virtual fit simulation technology as a fit assessment tool in the fashion industry i.e. to predict the behavior of women's pants in relation to fitting and comfort in different poses of avatar. This was done by application CAD Clo 3D fashion design software.