> My favorite changes aren't the inevitable boob enhancing/butt reducing/flab concealing ones, but some of the seemingly random changes. Like in the one with the three women on the bed, the bedspread has been entirely changed. It's been changed to match the pattern of the pillows behind them. Also, what appears to be a metal ornament at the foot of the bed has been removed entirely. The woman on the left had her tattoo (around her belly button) airbrushed out, while the two other women got to keep their much *more* obvious tats. Pretty interesting aesthetic choices.
>
> Also, I noticed that several women got their butts reduced, and several got theirs enhanced. But if there was ever any changes to the breast area, it was *always* an enhancement. Never noticed a single instance of breast reduction being done. I also noticed one where a woman got her pants pulled up to show less of her butt, and one where the woman's bikini bottoms got reduced to butt floss.

I notice that by far the most common change made is enhancing colour saturation. Every single picture is made more vibrant by retouching. After that, I notice the shadows are greatly reduced if not entirely eliminated, which also contributes to the general sense of "brightness" and saturation.

I'm not going to wax terribly philosophical at this point, but I do notice a similarity between this and popular techniques used in music postproduction, which focus on brightening and saturating the sound.