This thesis examines transformable fashion from a textile design perspective, focusing on knitting and laser-cutting techniques to create garments that foster circularity and emotional attachment. By utilizing modularity as a design strategy, the research challenges conventional garment construction, examining how textiles shape form, enhance adaptability, and facilitate transformation. Inspired by cellular behavior, particularly how cells grow, divide, and interconnect, the design process translates these principles into geometric, repeated structures that create flexible, adaptable textiles for garment design. The research investigates how modularity can enhance garment longevity, customization, and personalization, potentially fostering a deeper relationship between users and their garments. Through material experimentation and prototyping, the study develops a collection where shaping elements emerge from the textile and an interlacing system. By focusing on circularity and emotional durability, the project proposes an alternative fashion system that encourages long-term use, offering a sustainable design approach that encourages creative engagement and a meaningful connection between wearers and their clothing.