Despite the growing momentum around 3D reconstruction and generative AI in computer vision, a critical gap remains: how to create photorealistic, fully functional 3D digital twins that are indistinguishable from their real-world counterparts and enable practical applications. This workshop tackles that challenge by spotlighting 3D digital twin creation technologies and their broad impact across AR/VR, spatial and contextual AI, and robotics. Distinguished speakers from diverse disciplines will share cutting-edge digital twin creation techniques and real-world use cases. Additionally, we are excited to launch a benchmark and challenge for 3D digital twin creation, built on our Digital Twin Catalog (DTC) dataset and supported by open-source baselines. This initiative aims to spark meaningful discussion, foster collaboration, and accelerate progress in both academic research and practical deployment.