Peter Pan is the boy who never grew up. He lives in Neverland and has adventures with the Lost Boys. Even though he was a boy, Peter Pan outfits are sometimes made for girls, boys and women. This could be, in part, because in all Broadway and stage productions he is played by a woman. Regardless, all Peter Pan costumes are generally the same whether they are for males or females, featuring a green tunic and a pointed hat with a feather.
Peter Pan Costumes
If you want a men's Peter Pan costume your best bet might be to opt for an elaborate Captain Hook outfit. Captain Hook is his archenemy, and has a hook for a hand because it was cut off by "The Pan" and fed to a crocodile. The crocodile found Captain Hook so tasty that he followed him everywhere in hopes of another taste of the evil pirate.