This study investigates the transition from two-dimensional creative concepts to three-dimensional physical forms in gown construction, with particular focus on the translation gap between digital simulation and material realization. Adopting a practice-based research methodology, the development of a single gown is systematically examined across five interconnected stages: mood board creation, hand-drawn sketching, refined illustration, 3D virtual simulation using CLO3D, and physical draping in monochromatic grey muslin. The research evaluates how key structural elements, specifically grainline orientation, seam placement, and volumetric balance, are interpreted and transformed across visual, digital, and physical environments. The use of grey muslin as an analytical medium enables precise observation of fabric behavior under tension by minimizing the influence of surface aesthetics.

Findings indicate that 3D virtual simulation functions effectively as a predictive tool for silhouette, fit, and volume distribution. However, it remains limited in representing tactile properties such as cumulative fabric weight, localized tension, and grainline distortion. These limitations are resolved during the physical draping stage, where direct material interaction enables structural correction and stabilization. The study concludes that digital simulation cannot fully substitute material intelligence and that physical draping remains essential for final structural resolution. This research proposes a replicable methodological framework that integrates illustration, simulation, and draping to bridge the gap between conceptual design and technically resolved garment construction.