 The next day Kenny rejoins his friends , who are dressed up for a Halloween costume contest . Stan is dressed as Raggedy Andy ( since Wendy would be going as Raggedy Ann , thus making a pair ) , Kyle wears a Chewbacca mask , and Cartman is dressed as Hitler , much to the fury of Kyle , who is Jewish . A zombified Kenny joins the boys , but they fail to notice that he is a zombie . At school , Kyle gets more annoyed after discovering that the other students ( as well as Mr. Hat ) are also dressed as Chewbacca , while Mr. Garrison is dressed as Marilyn Monroe . Worst of all , Wendy is dressed as Chewbacca ; she explains that she changed costumes because they would have looked stupid as the Raggedy couple and she figured Stan would realize it too . A stubborn Kyle decides to make a new costume so he can win the prize , two tons of candy . Both Chef ( dressed as Evel Knievel ) and Principal Victoria are annoyed to see Cartman dressed as Hitler . Victoria makes him a " ghost " costume but he ends up looking more like a Ku Klux Klan member , which annoys Chef even more . At the contest , which is judged by Tina Yothers , Wendy ( despite wearing the same costume as the other students ) wins the candy , much to the fury of Kyle , who is now dressed as the Solar System . Stan wins the worst costume and everyone laughs at him , leaving him humiliated . 
