A lot of the touchups are to fix wrinkles in clothing, shadows, bad makeup, "flaws" accentuated by lighting, odd proportions due to bad posing, trim out fly-away hairs, and to even out skin tone again caused by bad lighting. The lighting is awful in many of the originals... making eyes look hollow, collar bones look like they're jutting out, wrinkles in the skin look huge. I've seen better lighting in some Glamorshots pictures. Also, a lot of the touchups look like touchups, meaning it doesn't look natural, you can tell they were altered. If whoever set the shoots up know what they were doing, many of the touchups wouldn't be needed if the lighting, posing, makeup and hair were done correctly. It almost seems like they didn't bother with any of that since they were planning on touching them up. The trimmed butt and waist and enhanced bust, that's just good ol' American marketing.
