A sex doll (also known as a love doll or a blowup doll) is an anthropomorphic sex toy modeled after a sexual partner. The sex doll can be a whole body with a face, or only a head, pelvis, or other partial body with sexual stimulation attachments. The components may vibrate and be detachable or replaceable. BBW sex dolls come in various shapes and sizes, but they differ from sex robots, which are humanoid creatures meant to engage in more nuanced activities.