First model from Marco Bicego 2010/2011 Spring ad campaign:
There's also video of the campaign:
http://www.youtube.com/watch?v=1BpEAEp8Glg
Second model is from Pandora 2011 advert:
(the girl all the way to the left)
I'm having a hard time trying to ID this model. I found her in the Marie Claire July 2010 issue. She looks familiar like I have seen her in promotions before: