Relax there @Rude_Bear, nobody’s lumping all gay people together here.
I agree with @Simone_De_Beauvoir and @hawaii_jake and would add that these are all Divas, or glamorous, powerful, larger-than-life women whose femininity is as exaggerated as it is celebrated. They are the center of attention for all their adoring fans and, as such, they are the living iconic embodiment of every drag queen’s fantasy of being similarly adored as a performer.
Way back in olden times, BC (before condoms), before the Gay Liberation movement in the early 1970s, the only people who were publicly known as homosexuals were those who were too effeminate to hide it. (See Quentin Crisp’s The Naked Civil Servant who the autobiography of a famous British homosexual who came out in the 1920s.) So, the prevailing assumption in society at that time was that all gay men were effeminate. And, accordingly, they were reviled and despised by red-blooded straight men and, sometimes, by their own more masculine counterparts who could pass as straight.
In order to defend themselves against the psychic pain of all this disapproval, they banded together and turned this stigma on its head. They developed a brand of “camp” humor, in which they dressed in drag, exaggerated their effeminacy, and turned it into an artform. Camp’s parody of femininity was accompanied by a clever, bitchy, devastatingly sarcastic repartee. It turned the tables on straight men by thrusting a grotesquely distorted image of femininity in their face, toward which they would be alternately attracted and repelled to hilarious effect.
In any case, they developed it into an art-form—one offshoot of which survives today in the drag queen pageants that take place in gay enclaves. One category of these competitions is (or was) “best impersonation” of one of the pop divas mentioned above.
Cher was one of the first to acknowledge and adopt these stylized “excesses” for her own costumes, giving them legitimacy and mirroring them back to the drag queen community, creating a kind of symbiotic feedback loop in which the style became ever more elaborate. This is why Cher’s wigs and get-ups resemble more what drag queens wear than anything women normally wear. Other pop divas followed suit in their own way and achieved a similar kind of iconic status in the community.
Anyway, it was these early drag queens who got fed up being hassled by vice cops, pushed back, pulled up parking meters and lit cop cars on fire during the Stonewall riots—and it is their memory we commemorate every year in our Gay Freedom Day parades. Without them we would still be an invisible minority.