DressCode is a text-driven framework for 3D clothing generation, designed to democratize design for beginners and unleash tremendous potential for fashion design, virtual fitting, and digital human creation. It initially introduces SewingGPT, a GPT-based architecture that integrates cross-attention and text-conditioned embeddings for generating sewing patterns from text instructions. Next, it customizes a pre-trained Stable Diffusion to create physically based rendering (PBR) textures based on tiles. By leveraging large language models, this framework generates CG-friendly clothing through natural language interactions, facilitates pattern completion and texture editing, and simplifies the design process through a user-friendly interface.