PurposeThe main changes in women's body shape due to aging include the descent of the breasts, tension in the abdomen, descent of the hips, increase in fat from the waist to the pelvis, and loss of waist definition. We adopted a system in which skilled body fitters correctly fitted subjects with underwear of different functions made based on the corrective underwear step system. Design/methodology/approachThis study was designed to use a three-dimensional (3D) body scanner to examine (1) the effects of aging and other factors on body shape changes, and (2) the status of the effect of moving and fixing fat flowing to the axillae and back to improve body shape.FindingsThe results of the 8-month study have suggested that the system affected changes in the body shape, especially in the breasts. OriginalityBy using this method, not only the body line can be expected to improve.