Samantha: Ok, I actually don't have a clear picture of how Sam looks (and since I rarely read the desciptions of how the characters look, I'm a bit lazy) I'm just gonna throw this in here:D The girl on the cover is good but somehow I also think of Shannon Lucio who was in the o.c... Although she's not blonde :D
Lindsay: Ok Linsay is popular, beautiful, Bitchy. Ofc after watching The Hills and Mean Girls names like Kristin Cavallari and Rachel McAdams pop up
Elody and Ally: Sam's and Linsay's best Friends. Like I said, I don't really read the descriptions well so I might be TOTALLY off (like when I first read New Moon and I thought Jacob was african-american and Sam Uley was ginger :D) but I imagined Elody Black with short kinda hair nd ally a brunette, kinda nice, sweet and a bit dumb :D
Obviously NOT rihanna but her hair and Fiercness :D
Kent: EASY! Aaron Johnson <3
Juliet Sykes: This character was also very clear in my head. Mia wasikowska who was the newest Alice...
AAAnd, that was pretty much it. Btw, I just finished the book :)