Find the "Hero" of your image

Model: Emilyne MUA: Heather Shelton

Many photographers both amateur and professional alike tend to shoot images of gorgeous people, or should I say people that are deemed beautiful by today's western culture and society.  Travel back in time 150 years and you'll hardly find that that a size 4 was considered to be attractive.  I am not stating that a there is anything wrong being a size 4 or size 24, but I'm rather leading this post to making a point about photographing fashion.
What makes a photograph fit in the genre of fashion?  Is it the outfit, pose, or model?
More after the jump