At the beginning, I think it's deja vu. I'd really found some similarities between this book and Delirium.
These for example:
-Operation to become pretty. Cure to be free from love.
-2 Friends. One wants the operation and the other doesn't. Tally and Shay. Lena and Hana.
But I didn't expect the story to became interesting. Well really, I like to try hoverboarding myself. It seems pretty fun and exhilarating. And the ending is heartbreaking. What will happen to Tally when she became pretty?“What you do, the way you think, makes you beautiful.”