Described herein are a system and a method for forming a stent of a desired length endoluminally. The system includes an elongate stent body and an outer sheath overlying the stent body. An endoluminal cutting mechanism is operatively connected to a drive cable in communication with the outer sheath. The cutting mechanism is configured to cut the stent body in response to motion of the drive cable. The method of forming the stent of a desired length endoluminally includes directing a system including an elongate stent body and an outer sheath overlying the stent body into a body lumen, positioning the stent body at an endoluminal site, and severing the stent body to form a stent of a desired length at the endoluminal site. An undeployed portion of the stent body remains in the outer sheath for optional deployment in a subsequent severing operation.