Virtual clothes try-on has recently come into the researchers' focus owing to its commercial potential. It can be used as an efficient tool in online shopping, allowing users to narrow down their choices to a few designs and sizes. In this study, a real 3D virtual clothes try-on system is proposed, which makes it possible for users to see themselves on a virtual monitor, wearing virtual clothes without taking off their real clothes. The tool also allows users to choose various clothes to try on.