Trans sex dolls are rare, though most sites carry a few. The better path for many people seeking a doll that doesn’t conform to a specific gender would be to shop across the gender spectrum until you find a face and body that you like. From there, you can acquire several customizations and accessories to push your doll’s gender in one way or another. The most common method is to purchase a penis attachment, the back end of which fits securely inside a female doll’s vagina.