Lets see:
Tally Youngblood finaly turns pretty, shes back with all her friends, and met Zane.
Later Tally and Zane discover that there is a downside to the operation--your brain gets these...
The Online Etymology Dictionary says that it was first recorded in 1768: http://www.etymonline.com/index.php?search=%22pretty+penny%22&searchmode=none
This has a more complete explanation, towards...
do you mean like the first book? or the entire series...? well, I'll give you a summarry of the first book: In the first book, Alison DiLaurentis, manipulative and nasty "Queen Bee" of Rosewood Day,...