One who believes in the power of fashion. Fashionistas are typically either stylish women or homosexual men.
As an example of a successful fashionist government, they cite the period between Thanksgiving and Christmas in New York City (1999) almost religiously, in which local fashionistas overthrew the municipal government.
"Blacklist that sucker! He's a Fashionista! Keep an eye out because he'll either try to anally violate you or overthrow our government."