We stopped playing video games when we retired the Intellivision in 1984. So we don’t know much about Guitar Hero other than it’s wildly popular and Evelyn Ng kicks ass at it.
With that in mind, her Halloween costume was fittingly appropriate. We surmise that it’s of one of the bandmates in the game (uh, the one at left), and she looks really hot in character.
They need to have an Oscars-type awards ceremony for Halloween costumes, btw. Best Sexy Cop. Best Slutty Nurse. Etc.