Unforgettable by Cecily Von Ziegesar (It Girl #4)

Since Jenny arrived at Waverly Academy and set out on her mission to become it, she's certainly made an impact! From stealing her roommates boyfriend to making enemies of the notorious Tinsley Carmichael she's always given the girls something to talk about.
But old rivalries are about to make way for new friendships as Dumbarton's residents embrace the sharing-is-caring vibe at the newly founded Women of Waverly club. There are some pretty juicy topics up for discussion and even juicier topics being kept under wraps. For now...

With Secrets this scandalous it's only a matter of time before Waverly's new found girl power explodes into a massive girl fight. UNFORGETTABLE - the fourth book in the delicious IT GIRL series.