Fiber-reinforced composites (FRCs) offer immense potential for driving sustainability in fashion by integrating advanced material science with traditional craftsmanship. This chapter explores the role of FRCs, particularly those reinforced with natural fibers such as hemp, flax, and bamboo, as eco-friendly alternatives to synthetic composites. By combining lightweight durability with aesthetic flexibility, these materials create opportunities for innovative fashion designs that meet both functional and cultural needs. The chapter delves into the sustainability metrics of natural fiber-reinforced composites (NFRCs), examining their environmental benefits, including reduced carbon footprints, lower energy consumption, and enhanced recyclability. It also highlights how traditional textile techniques and artisanal skills can be preserved and revitalized through their integration into FRC production, fostering cultural sustainability. Through case studies and real-world examples, the chapter shows how NFRCs can be applied in fashion apparel, accessories, and footwear, aligning durability with cultural aesthetics. Challenges such as scalability, consumer acceptance, and cost-effectiveness are critically examined, alongside emerging solutions like bio-based resins and additive manufacturing. By bridging cultural heritage and material innovation, this chapter envisions a future where sustainable fashion not only addresses environmental challenges but also serves as a platform for preserving and celebrating diverse cultural identities.