Based on a new concept using only"Concentrated Gaussian Curvature by angle (Kc=2π - θ)" for clothing design, we classified similar curved surface shapes of tight-fitting bodice patterns (called T-pattern) regardless of size. In accordance with the conservation law based on the Gauss-Bonnet theorem, the total value of Kc of the five darts and the three boundary lines of each of the 203 T-patterns has a consistent value of 720 degrees. Using the methods of principal component analysis and cluster analysis, the T-pattern curved surface shapes were classified as three T-pattern types of the sloping, standard, and square shoulders, with two subgroups in each group. The sloping and square shoulder T-pattern types were divided by small or large bust curved surfaces while the standard shoulder slope and bust curved surfaces were further separated by plane or convex back surfaces.
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