Fashion designers have always been using new technologies to design and submit their collections, the Light Emitting Diode (LED) became from the most popular technologies used nowadays, and they can be used as a decorative item besides beads and sequins or solely adding new aesthetic values. The study overviewed this technology and it's usage in fashion in the past years also used this technology to create two women's wear collections for spring summer and executed four designs evaluated and judged as the best designs by experts in the fashion field though a designed questionnaire, in addition, the researcher clarified the methodology of how LEDs could be installed into the executed garments also measured the visible light transmission values of the fabrics used and tested the changes that LEDs could cause on the physical properties and colors of the fabrics used in the executed garments by performing bursting strength test, maximum force and elongation test, color reflectance and K,/S tests after exposing the fabrics to LED lights for 80, 110 and 140 hours. Research problem: 1- How do the LEDs affect the fabrics used in special occasion's women's wear? 2-What is the possibility of using LEDs to enrich the aesthetic and functional values of women's special occasions clothing designs? 3- What are the techniques of installing LEDs into women's clothing? Research Results:classifying the uses of LEDs in fashion design, clarify an important side of fashion design which is combining clothes with modern technological techniques by applying LEDs to performance garments and evening gowns as a decorative ornament along with beads, reflecting surfaces to create decorative shapes according to the LEDs arrangement, Stating different techniques, tools, knowledge, styles and skills of designing and producing the light up garments, evaluating the effect of LED installation on certain fabrics used in fashion design.