I've been trying to identify which Girl/Card is choosen to represent individual Booster Packs. So far I managed to identify following:
Blondes :
Brunettes: Sandra H - Shoping Fever
Big Boobs: Marta - Cuba Libre
Stockings:
Bikini :

Any idea who's on remaining three adds?

Right now you have 198 cards in your collection, which by my math means that right now there are 132 cards you don't own. Everybody's booster pack offering will be different from everyone else's because you only get offered cards that meet the category description and which you don't already own. It's hard to believe that with 132 you don't own, they can't find at least 10 new cards from each of the 5 categories, but that seems to be the case. Why not buy a booster pack, and then (after they are safely in your collection) see how the new booster pack offerings to you may have changed?

I don't mean cards IN booster packs. They change with each purchase. What I'm wondering is who is on Adds for individual Booster Packs...

Ohhhh, you mean "adds" as in addvertisements. Sorry, I'm a little slow today. I agree with your identifications so far, and as for the rest, it's an interesting question. The blonde has the most drop-dead gorgeous beautiful blue eyes that looks right through me. (sigh...) When you see her full face on the side ad for the Blondes Booster Pack, it sure looks like Nikky Case. The Bikini Booster Pack model looks like Zafira/Florida sun.

Blondes is Nikky Case, Brunettes I'm almost positive is Zafira, not Sandra H.

You're both correct. Brunettes is Zafira/Florida Sun and after seeing that side add for Blondes I agree it's Nikky Case /Lollipop card. I can't confirm Bikini one since I don't have enough girls left so I'm not offered that one [I own every card with Bikini tag].

So that would mean following:
Blondes : Nikky Case - Lollipop
Brunettes: Zafira - Florida Sun
Big Boobs: Marta - Cuba Libre
Stockings:
Bikini : Zafira - Florida Sun

So, does anybody have an idea who that nice butt on Stockings add belong to?

@Ripett Probably Katerina H or maybe Lucie T.

if i have a good memory, i think that the picture of the stockings booster pack is one of Angelina ***** but her card is not online yet!

That might explain why it's not familiar to anyone...