Most celebrities know they’re nothing without their fans. Key word: most.
Unfortunately, there are some stars who haven’t learned that lesson — including Caitlyn Jenner, who's said to have dismissed a fan at a recent book signing.
Want to find out if your idol is worth approaching for an autograph or a pic? Click through the gallery for Caitlyn and 10 other big names known for their not-so-nice demeanor.
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