I am a Hogwarts student, hear me roar! These two photos show my Halloween costume from 2006, and this right here is a form of cosplay. Cosplay is where fans put together costumes of their favourite characters (or create a character within that fandom’s universe) and they wear their costumes in public (like at a convention) to show their love of that particular fandom. Cosplaying is not limited to Halloween, and it can occur anytime of the year. I chose to cosplay a Hogwarts student that year, and this took months of preparation. I bought the robe, the tie, the wand, and the patch separately online, and my awesome friend knitted me that scarf. I chose my Hogwarts House to be Slytherin because I identified myself as as that back then.
Some cosplayers are real professionals who take the time to sew their costumes from scratch, and they even purchase wigs and style them! See below a group cosplaying characters from Persona 4, a video game, compared to the original character designs. Such attention to details are commonplace for cosplayers.