Book Vault’s Birthday Contest Riddle

This is the next leg of The Book Vault’s birthday book riddle contest! For more information on the contest, go here: http://the-book-vault.blogspot.com/2008/08/birthday-contest.html
Each correct answer counts as an entry into the drawing on August 29th!

Riddle: She was #71 until she and her friends found a way to get her higher on the food chain. But the main character learns that the popular crowd might be full of more betrayals than glamour and true friends.
What book is this?

Know the answer? Send Dominique an email at bookvault@yahoo.com with:

“BDAY CONTEST” in the subject line

Please include:

Name:

The Riddle: She was #71 until she and her friends found a way to get her higher on the food chain. But the main character learns that the popular crowd might be full of more betrayals than glamour and true friends.
What book is this?

Answer: (full book title + author)

The name of the site where you found the riddle: From the Corner of Megan’s Mind

Your site’s URL: (if you have one)

Please send a separate email for each riddle you answer!

Good luck!!

Quote of the Day:

The trouble with fighting for human freedom is that one spends most of one's time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all.
-- H. L. Mencken