Most of them are not porn stars.
They are average girls that live near LA or they are people that work for the company at the headquarters in LA.
The asian girl seen in many of the photos is Kyung who happens to be the main photographer for the company and is a completely awesome 27 year old.
Dov is total sicko but only about 5% if that are pictures that he takes. He used to take a lot but then a few girls pressed charges and what not.
The company has gotten much better though and the ads now aren't quite as provocative and now all the models are pretty much over 22 instead of 19 like before. 3 years does a lot in appearance.