Just like all the other good reviews I have to agree that this book is bitchy, disgraceful, superficial and just amazing.
At first you're introduced to Blair Waldorf who is portrayed as a young, snivelling bitchy kind of girl but you see underneath that cold demeanour she really is just a young girl trying to make her life as smooth as possible and wanting to keep her boyfriend Nate away from the seductive Serena.
Serena on the other hand is then shown as a very beautiful girl, who likes to have fun, be with her friends and is a nice girl in general who is the main focus of all the rumours after returning to her former school Constance due to being kicked out from her new boarding school... people throughout the book make up numerous rumours but the truth in fact is not so scandalous.
Blair and Serena were best friends before Serena went off to boarding school but when she returns all she's greeted with is one cold shoulder after another and no-ones seems to want to talk to her or party like the good old times. I found the break-up in Blair/Serena's relationship kind of sad as we saw that Serena isn't really how everyone makes her out to be and Blair keeps misunderstanding Serena's real motives.
However the book is absolutely wonderful to read with interesting characters such as Dan [obsessed with Serena] Nate [stuck over who he wants to be with -- Serena or Blair] Jenny [the girl with the enormous boobs!] and Chuck [the disgusting hormonally charged pervert] making a great plot.