It's no secret that photos of females are regularly airbrushed in magazines, with their waists and thighs digitally slimmed, their chests amplified, and their skin erased of any imperfections, to the point where some women are practically unrecognizable in the "after" pictures.

These images impact how many young girls view their bodies and their self-worth, and one model decided to speak out against the pressure on women to look perfect. Sally Gifford Piper made a video called “Body Evolution,” which went viral as she is made tanner, slimmer and taller, with longer hair and smoother skin. Piper created the video as a way to point out the unattainable beauty ideals placed on women today by the media.

Piper talked this week about the 36-second clip with Entertainment Tonight, saying, “I feel really angry about the pressure on women. The reality is that most of us don't look like these perfect women, and I think there needs to be a celebration of all different shapes and sizes. We need to see more variety, and I'm determined to fight for that." 

But photos of celebrities are constantly being airbrushed, and a number of them in recent years have come under fire because of it. While Britney Spears has gotten into great shape over the past few months, it seems she's still not perfect enough to escape Photoshop. The latest video from the pop princess, “Work B*tch,” is said to have been retouched, with images being reformatted to make Spears look slimmer and airbrushed to perfection.

HOAX Films recently released unaltered images of the 31-year-old pop star in still shots taken from the music video. The "before" images show Spears with a thicker waist, arms and thighs. When placed next to the digitally enhanced image, reportedly the image used in the final cut, the singer looks noticeably different. The Daily Mail reports that HOAX was supposed to “clean up” the photos.

In 2009, unedited photos of Kim Kardashian for Complex magazine were released, showing cellulite, a larger waist and uneven skin tone. People were quick to point out Kardashian's imperfections. Kardashian addressed the pre-Photoshopped photos, writing on her website, "So what: I have a little cellulite. Yes, I am complex!" "What curvy girl doesn't?!"

In 2007, L’Oreal faced backlash after making drastic changes to Beyonce’s face, the face of the brand at the time. Her skin was significantly lightened and her nose digitally altered to look narrower. Fans immediately spoke out against the vastly different image. But the makeup giant denied the allegations, saying in a statement, “It is categorically untrue that L'Oreal Paris altered Ms. Knowles' features or skin tone in the campaign.”