I'm sick of, among other things:
- Dumb & Vapid Model/Aspiring Model -> This stereotype works just as well with cheerleaders, but I've seen it more often lately with models or wannabe models. These characters are portrayed as shallow, entirely superficial, and with no interests other than looking good. They can't carry on intelligent conversations, often judge others (even & especially their friends) based on appearances alone, and they make me want to scream. I get that modeling/cheerleading is one of those things with a very pronounced and often exaggerated culture that is great for stereotypical portrayals, but also very bothersome. Nobody is one-dimensional. My model sister might spend hours organizing her clothes, but she also has a list of books to read that includes quite a few classics, and listens to great music that I've never even heard of.
- Bad Boy Who Isn't Really -> You know the characters that fall under this cliche; Edward Cullen is just one of them. These are the guys that have been to juvy, that are total womanizers, that do drugs and skip class and are totally horrible. Except, you know, not, because then they find their One True Love and become a changed man and it turns out that they always had a heart of gold! Excuse me but - barf. This can be done well, of course, but it's such a huge cliche that in order for it to work the character's personality and life has to really be explored so that the reader can move beyond the Bad-Boy-With-A-Good-Heart image. And that's a really, really difficult thing to do; more often the third-act revelation that this character is actually one of the good guys is passed off as depth of character when it's anything but.
- Inseparable BFFs Since Birth -> This happens a lot in YA and MG and I don't know about you guys, but the best friend I had in kindergarten? Not my best friend anymore. Surprising as it is (note massive sarcasm), we changed a bit between age five and the start of high school. Different groups of friends, different interests, different everything. Friendships are hard, best-friendships are the hardest, and it's really rare to stay that close to someone you've been besties with your entire life. It happens, just not often, and not without struggles and fights along the way. Whenever I read a book with best friends who've been best friends since elementary school, who never fight, who completely love and understand everything about each other it ceases to be realistic to me - people are different. Even people who have a great friendship or relationship and who really do love and care for each other - even those people don't agree on everything.
All three of these massive cliches can be done. They can be done well, they can be done extremely well, but they rarely are. However, this only makes it all the more awesome when I find a book that nails it.