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The book written by the author of the Gossip Girl series as a mashup, in which the two main characters, Serena and Blair become serial killers and kill everyone they hate in Manhattan, trying to keep blood away from their brand new Prada bags or YSLs.
Girl : OMG, Gossip Girl, Psycho Killer is so great!
Other Girl: My favorite part is when Serena kills the guy that didn't wanna pour her a Martini for being underage!
Girl: Too bad her Gucci got dirty!
Other Girl: Tots.
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