Garment specification plays a critical role in the processing of manufacturing formal dress today, particularly wedding dress. However, wedding dress is usually white for the sake of purity, but today it is free to choose the form of color for wedding dress based on users’ life, status and preferences. Hence, the aim of this study is to illustrate the critical role that fabric and garment specification plays in pursuing practical and aesthetic value of a perfect wedding dress. This study critically reviews the prior studies on the garment specification application in making wedding dress for today’s customers from a few key aspects, including the design, size, measuring, draping and stitching, fabric specification, and textile testing of wedding dress. Furthermore, the case study of a Strapless Tight-fitting and Trailing Welding Dress indicates that garment specification includes requirements of the wedding and provide charting instruments, fabric description, fabric testing to the dress designer to better construct their wedding dresses, and ensure the quality and concept of wedding dress. This study calls on all brands to attach importance to garment specification and fabric testing to ensure sustainable use of wedding dresses.