This paper suggests basic information for the improvement of the fit of cloth patterns by lateral body type by comparing the surface patterns of the upper lateral body. The surface patterns were created by projecting three-dimensional figure data onto flattened patterns with a purpose-built software, Patternmaker2008. The resulting surface patterns were compared to explain the differences among lateral body types. Depending on the upper lateral body type, there were significant differences in the parameters related to neck width, lateral neck height, shoulder-dart angle, shoulder angle, back-center angle, and waist-dart ratio. These surface pattern parameters can provide a quantitative basis for the use of lateral shape features in the production of garment patterns and the improvement of upper lateral shape fit.