Beautiful blondeTeen Girls
The blonde is Juliette from MET. She was very popular several years ago, but hasn't done much recently. The brunette is the very famous (on MET at least) Alessandra. She is still pretty recent having done four cover releases this year. Try looking for Juliette on older MET stuff 2-4 years ago. You might also look on the new MET site MET-Models. It looks like they are re-releasing lots of pics from the early years of MET. Of course you may have to look for her under a different name on MET-Models. It seems that they are renaming some of the older models. Some of the current models are listed with the same name, but I'm sure its to avoid confusion. Or perhaps it has some legal reason that they can't use the same name.
Here is one of the covers from this shoot.