Fashion Photography

To what degree should the image be minipulated to go into fashion magazine?
When it comes to fashion photography everybody knows that the photo's have usually been minipulated and airbrushed but should we actually be minipulating the images because a good photographer shouldn't have there pictures airbrushed and and changed they should just be able to take a good shot and print it.
In this picture you can see that they have made her waste skinnier and her arms and legs, they have even changed the colour of her skin tone and even changed the way her knees look. Adverts and fashion magazines don't help with the way they make people look because they are portraying that you have to look that good even though in the before shot the models and actors don't look like that, fashion pictures shouldn't be munipulated because even the people posing for the picture could start to worry because they have been changed so much and could either not go for jobs or just really start worrying about the way they look. I don't think fashion pictures should be minipulated the way they are and they should just let the photographer do there job otherwise in a few years to come photographers won't have a job and all it will be a person made up on a computer.