By Greg Botelho, CNN
(CNN) - When teenage girls check out Seventeen magazine, they'll be getting the complete picture - no ifs, ands or Photoshopped butts about it.
That's the pledge the magazine's staff made in its latest edition, after a push led by a Maine 14-year-old to combat the practice of tweaking pictures and picking models whose appearance give teens an unrealistic perspective on what is beautiful.
"We vow to ... never change girls' body or face shapes. (Never have, never will)," the magazine states as part of its "Body Peace Treaty" from its August edition, a copy of which CNN obtained Thursday.
The treaty and accompanying note by editor-in-chief Ann Shoket promise that Seventeen will "celebrate every kind of beauty" and feature "real girls and models who are healthy," while vouching that the magazine always has done just that.
But the more than 84,000 people who signed a Change.org petition, started by teenager Julia Bluhm, clearly believed Seventeen and other publications didn't always present the full, unvarnished truth.
"Those 'pretty women' that we see in magazines are fake," the petition said, in requesting "one unaltered - real - photo spread per month." "They're often Photoshopped, air-brushed, edited to look thinner and to appear like they have perfect skin. A girl you see in a magazine probably looks a lot different in real life."
Retouching photographs is nothing new - especially in magazines and, increasingly, on the Internet. Adobe Photoshop and other digital image manipulation programs are widely employed by professionals and everyday users.
The petition claims that disseminating such altered images to impressionable teens can pose a real danger, helping to spawn a culture that touts unrealistic beauty and contributes to eating disorders, extreme dieting, depression and more.