Augmented reality (AR) strengthens the elements of a live direct or indirect view of a physical, real-world environment with sound or graphics. It can be applied in virtual dressing for online shopping, and provide a good solution for online product display. This paper presents a virtual dressing system framework including features capture, tracking and location, register and augmented display. It also designs a layer based application system and implements a prototype of virtual dressing system for glasses online shopping. The system can provide a brand new user experience than before.