A corner fitting preform (100) and a method of forming a corner fitting preform including steps integrally weaving a base (10) or parent material with one or more flanges or legs (20) that extend from the base (10) is disclosed. The flat woven preform includes specially engineered areas within the legs or flanges (20) that have continuous warp yarns which are not woven. The unwoven areas (28) provide a hinge which allows the flanges (20) of the preform to fold around a corner. After folding, the excess unwoven warp yarns are pulled back through the woven portion of the legs or flanges to produce a preform with continuous warp yarn reinforcement around the corner.