One Piece star Emily Rudd's Nami costume differs slightly in the Netflix show from the manga (and anime), but the actor wanted to make sure it was as accurate as possible "for the fans."
For the show's Reverse Mountain arc, Nami's blue patterned tank top from the manga and anime becomes a long-sleeved shirt because of the weather conditions during filming, but her miniskirt stayed the same at Rudd's insistence.
