This sequel to Uglies that goes on to examine current teen issues of starvation and cutting to heighten awareness in a world which they feel they have no control over their own lives. It, too, is placed in a post-apocalyptic society in order to examine the practice from a different standpoint.
In Pretties, Tally Youngblood has sacrificed herself to become Pretty in order to find out if Maddy's cure will work. Since she has forgotten (or, perhaps, forgotten to care) about David, she falls in love with a fellow Pretty, Zane.
Westerfeld's story unfolds further in this book. The ties of love and friendship are strained even more, and the results of betrayal begin to catch up with his heroine.