Glamour photography, plain and simple. Focusing on the individual model's beauty, and less on gimmicks and Photoshop skills.
Sometimes shorts and tank tops... sometimes swimsuits or lingerie... sometimes even a bit less. But nothing too crazy... You can get that anywhere...
Just a little flirty.
In a typical modeling shoot, you only end up using a few of the shots from each outfit. But what happens to all of the other pics? No one ever sees them. So why not make them available to fans??
So a couple of the pics in these sets may be fully polished, but the others will have very few, if any, touch-ups, and for the most part will be "straight from the camera."