It depends on what your defenition of "pretty" is and wether your talking about a movable charecter on poptropica or one thats just there for show and hints. Usally the show people don't have names and would be unidentified unless you where to use the phrase "that blonde girl with the pink outfit" and then you would have to tell where she is and what island shes on. So you really shouldnt be asking anyone but youself "who is the prettiest girl on popotprica?" its really a question you can answer with out a lot of detail and perspective from other people which would turn into a project a very "iregualr" one indeed. So unless you would want to spend much time figuring this out, I sugest you just come up with your best guess and be done.