Charlotte Sins is the ideal vehicle for this trope. Emerging as a major force in the post-2020 era, Sins possesses a specific physicality that makes the "twin" narrative work: she has a versatile look.
Humans are fascinated by the idea of a duplicate. The "twin fantasy" allows viewers to project two opposing desires onto the same face. You don't have to choose between the girl-next-door and the femme fatale if the actress is both.
