No one likes the desexed/covered up versions of characters. I’ve seen more girls cosplaying as genderbent versions of guys than I have of girls cosplaying as the “non-sexualized” versions of characters like Starfire, Raven, etc.
Sex does in fact sell.
You can bet the plainest Jane in the convention has half of her tiny tits hanging out. Gals can't get that kind of attention the rest of the year.