Cosplay is basically describing a performing-art behaviour of self-rigging out as a character with corresponding costume, accessories and/or parameters.
Cosplay isn't about making a costume anymore, even if the concept was born inside the anime and manga world, now everything can be cosplayed
Movies, tv series, music groups... everything is allowed since cosplaying is another way of fanart, is a mixture of skills as sewing, makeup and even weapons construction or wig styling, usually the cosplay itself becomes a masterpiece of work that costs even months to be made.
This is my little tribute for all those cosplay artist you can find around the DeviantArt.-Manga&Anime
OHSHC - Come and hug me by el-gay
:thumb26352973: Princess Tutu - Pray by rukawagf
Kimi wa dare wo Mamotte Iru by behindinfinity
Soryuu Yami no Matsuei by nyvaine
Trinity Blood by ShanHuang
COSPLAY-KHR:BYAKURAN00 by yolkler
'i pray for you' by Mi-panda