any help would be appreciated.

Do you have some higher res versions to post, the one you have there are fairly small.

I am almost certain that those are both airbrushed art, not digitally done.
It appears to be an airbushed calendar girl art...
You can get close with certain actions, or repainting a real model in a digital art program, but you'd still need some artistic
ability to make it look that good, I'd think.
These may be painted in Painter, or even Photoshop, etc., but it's not a simple task to make a real-life model look like that,
exactly anyway, lot's of time would be in it, not to mention skill.
I'm not saying it can't be done, it just wouldn't be easy, that's all.

Randy

An airbrusher by the name of Vargus did many of this type of painting. Search Google/Images/Vargas for some similar work

i really like how they look like a photograph and a painting. i am sure it's a long process, but some hints would be helpful. thanks

One particular aspect I noticed in the above pictures is the darker shading around the legs and arms at the outer edges. This edge darkening gives a nice rounded effect.

You could achieve this kind of effect by selecting the outline of the legs with any method - and then painting outside the selection with a very large, low opacity, very soft brush in the darker color you want. That would give you that dark look around the edges that is nice and soft on the inside edge - but - hard edged at the selection line itself. You would end up painting mostly outside of the selection - but - letting just a little bit of the soft feather edge go inside of the selection zone to create that dark edge shading.

After that, you could then run a very low opacity, very soft brush down the center of the leg with a skin tone that was just a bit brighter.

It would be good to do each of these moves on separate layers so that you would have superb artistic control and could make adjustments to them fairly easily. These are some of the kinds of things an actual airbrush artist does using a frisket mask to get that hard and soft edge. This is easily achieved in Photoshop and you can keep doing it over and over till you get it just the way you like.

I agree with a previous poster that some artistic judgement would be involved to get that realistic look.

Ray

i really like how they look like a photograph and a painting. i am sure it's a long process, but some hints would be helpful. thanks

Have a look here:

http://www.howtoairbrush.com/

cool. thanks.

"does anyone know how to do this?"

Sure: after 5 years graphical college you'll do this in about 3 weeks.

If you have an appropriate image to work this on, the steps for a pinup look involve these steps to start with.
1. Extract the subject either first or last. Sometimes the remaining steps will make extraction easier.
2. Flatten the lighting with a strong dose of Shadow/Highlights.
3. Completely clean the skin with a strong noise removal tool setting.
4. Sharpen as much as you can get away with.
5. Apply the lighting and glow to the skin.
6. Use the liquify tool to enhance the eyes, lips, body shape, etc.
It's not easy, but if the image is well lit and high quality, it works. Color correction will be critical along the way.
Bill

http://www.worth1000.com/tutorial.asp?sid=161007
This might help you a little.