The various Cosplay activities, introduction of media, and mass information dissemination about Cosplay on the Internet which makes the amount of free participants of Cosplay increase sharply, and Cosplay gradually developed truly and independently.In today's cosplay, its form and content generally refer to the use of costumes, trinkets, props and makeup to play the role in ACG or some Japanese visual bands and some characters in movies.

https://www.ccosplay.com/

Cosplay culture have a rapid development  in animation and games. I like cosplay. Some people think it is childish. It is just a game played by children. I don't object to this statement, but neither do I. 

What does "Cosplay" mean? It means the beginning of a new career. It is a combination of English words "cost" and "play", that is, "Cos", which uses real people to play characters in animation or games.