Uglies (novel series)

Uglies is a young adult book series by Scott Westerfeld, set in a post-apocalyptic future where the government strictly controls their citizens by separating society into Uglies, young people who haven't turned sixteen yet, and Pretties, who Uglies have an operation to become when they're sixteen and every few decades thereafter.

Westerfeld originally intended for Uglies to be a trilogy, with the novels Uglies, Pretties, and Specials. However, he ultimately wrote an additional book, Extras. This fourth book is dedicated to "everyone who wrote to me to reveal the secret definition of the word 'trilogy'."

On February 2, 2018, Westerfeld announced a continuation of the series consisting of four new novels, starting with Impostors which was released in September of that year.