The Dark Magician Girl outfit is an item of clothing.
It appears in the video games, Yu-Gi-Oh! World Championship 2008, Yu-Gi-Oh! 5D's World Championship 2009: Stardust Accelerator, Yu-Gi-Oh! 5D's World Championship 2010: Reverse of Arcadia and Yu-Gi-Oh! 5D's World Championship 2011: Over the Nexus. It can only be worn by female characters. The male alternative is the Celtic Guardian costume or the Dark Magician costume.
Narumi, Salida Noula, Grammy, and Alina Noula all wear this costume. Female players of the game can unlock it by defeating any of the aforementioned characters any number of times, such the total victories over all of them adds to ten.