Oh My Goth by Gena Showalter

In our modern-day world, Jade Leigh's school is separated into two cliques: the "barbie clones," and the "freaks." Jade is proudly a freak, but when her smart mouth lands her in the principal's office again, she is taught a lesson that she'll remember for the rest of her life. In a crazy blur, she wakes up and she and the head of the clones, Mercedes, have switched places. Only fierce teamwork can save them, but it teaches you one thing: don't take anything for granted. Gena Showalter captivates readers as you go on a journey you won't forget.