Gay

(of a person, especially a man) homosexual.

Typing "stereotypical gay man" into google can almost guarantee all the same photos. From the hair and the clothes, to the way that they're presented. It's true that some gay men decide to dress this way, but it's unfair to say that they're all the same and choose to present themselves in the same way. It has nothing to do with their sexuality, and more to do with their gender identity, which is much different.