Crafting, it's ridiculous, isn't it?
Even on sites intended for those women over a size 14 all the models are extremely shapely and tall so they don't look in any way 'bigger') Size 14 was considered fairly thin when I was in my twenties, yet now with the advent of size 4s and 6s a 14 is deemed huge.
I know most models are tall because they make better clothes hangers, but oh for photos of shorter more dumpy women wearing things I might consider buying! 
I suppose there is flawed logic in that. If shorter, plumper models don't look good in the photos, those viewing won't be attracted to the clothes! We can't win! 