I saw an article in Glamour a few months back that said the same thing.  I *think* it was Tyra Banks they highlighted and showed that despite her beauty, magazines have to touch up her “flaws” with photoshop.  They slimmed down her tush, hips and already flat belly.  They lengthened and sculpted her neck among other edits.
And people wonder why so many women are so insure about themselves.

That is an awesome video...I amy have to repost that.