Abstract: A women's shoe with flexible shank for use with replaceable heels of different height includes a sole with a forward support portion and a raised heel portion and an overlying insole. An elongated flexible spring steel shank is nested within a slot between the insole and sole and at one end anchored thereto. A high heel registers with the heel portion and interlocking fasteners upon the heel and heel portion upon limited rotation of the heel relative to the shoe removably anchors the heel upon the shoe. The heel upon limited angular rotation and disengagement of the fasteners is adapted for removal and replacement by a low heel having similar fasteners. The shank moves within the slot to compensate for the change in height. The interlocking fasteners include opposed interconnected lock segments and anchor flanges secured respectively to the heel and heel portion.