While Cosplay has been going on for over 100 years, beginning probably in Japan, it took some time before it became the convention phenomenon it is today.
The book Cosplay World reviews the evolution of what some consider to be an art form, featuring stars of the craft such as Yaya Han, Crystal Graziano, and Spiral Cats.
Daenerys Targaryen
Halo Spartan
Raiden from Metal Gear Solid
Garrett from the video game series Thief
Superman
Venom & Spider-Man
Wonder Woman
Captain America
Black Panther
Savage Opress from the animated series Star Wars: The Clone Wars
Alphonse Elric from the manga and anime Fullmetal Alchemist
Gon Destroyer from Blade & Soul
Camilla from the anime film Vampire Hunter D: Bloodlust
Empress Himiko from the video game Atlantica Online
Cheza from the anime Wolf’s Rain
Panty from the manga and anime Panty & Stocking With Garterbelt
Spider queen Arachnia
Hat Tip: Matthew Tucker
For more awesome Cosplay, check out this Cardboard Iron Man Armor or this hilarious Gameboy outfit.