Want to know what Sienna or Keira think of being airbrushed? Read what the celebrities have to say about their digital versions here.
Kate Beckinsale: "It's intimidating, even for me, to come upon pictures of myself in magazines. The airbrush was a diabolical invention. I'll look at a photo and say, 'God, I wish I still looked like that.' Then I realise, 'Oh, I never did.'
"I long to see actresses as they really are, with wrinkles and blemishes. Otherwise, it's just not what we'd call normal."
Elizabeth Hurley: "Shooting bikinis is now my life, which as you can imagine is unmitigated hell. But if you signed on for the gig, sadly, you have to go and be jolly in a skimpy white bikini. So now I rely on nice photographers and a certain amount of retouching. I don't mind if you want to make me a bit thinner and a bit younger... Everytime I download my holiday snaps I go over them".
Keira Knightley: "Airbrushing is sort of nice because I always get acne, so it's all incredibly nice when they take it out digitally. "I wish they could do that for me in my every day life."
On her boosted chest for the Chanel campaign: "Those things certainly weren't mine."
Kate Winslet (on being airbrushed by GQ magazine): "I do not look like that and more importantly I don't desire to look like that. I am proud, you know. It's hard work getting your shape back after two kids but I like the way I look. My stomach is all crinkly and my boobs, they're like the ears off a dog."
Dylan Jones, GQ Editor: "It hasn't a lot to do with body size. Practically every photo you see in a magazine will have been digitally altered in this way."
Tyra Banks: "The public is really hard on people in the industry and your image has to be perfect, and I openly admit that I have cellulite and I get that touched off."
Sienna Miller: "I have small breasts and cellulite. I don't really exercise and I eat all the burgers I want. Let's face it, my so-called fabulous shape is the result of very clever airbrushing."
Tara Palmer Tompkinson: "Thank God for airbrushing - that's why I look good in magazines.
Model Coco Rocha: "It's all about the computer these days. People might look at a picture of me and say: `Wow, I wish I had her body,' but they should realize that I often look at a picture of myself and say, `Wow, I wish I had my body.'"
Jennifer Ellison (after Maxim airbrushed away her bikini making her look like she was naked): "I'm fuming. What they have done is take the bikini off me and made a whole new centrepiece of my body. If you look at the stomach, that's not my belly button. I've got a sticky-out belly button and that's a sticky-in belly button."
Picture credits: UPI, Numero 86, GQ, Observer, Mert and Marcus, Getty Images
Keira Knightley: "I'm on the cover of a magazine but somebody else does the hair, and the makeup, and airbrushes the f**k out of me - it's not me, it's something other people have created."