Airbrushing. Look, she has an amazing physique, but she's not flawless. She has some lumps and bumps and less-that-perfectly-flat tummy (gasp!) -- things that make all of us human (granted, not as much as most humans have...!)
Look at candid paparazzi shots of her vs: airbrushed Victoria's Secret images from their catalog.
As Kaity Stardust of one of my favorite blogs, Jewelry Dose Daily pointed out, she looks amazing in all the photos, airbrushed or not, which is true - I'm not saying she isn't a goddess of physical beauty, but she's human, and naturally looks like a human, where as in the catalogs shes perfectly smooth and flat and toned, which no one, not even a Brazilian supermodel or any of the other most beautiful women in the world, can be in real life! We can't all have airbrushers perfecting our photos, so we should be happy to look the way we look.