The Pretty One

All Megan Fletcher had wanted was to be like her sister Lucy: a beautiful, thin girl whom everyone at the Chesapeake School for Performing Arts worshipped and adored. While Lucy was a star actress with lots of fans, Megan had always been hiding behind the set designs that she and her best friend Simon had created, hoping that no one would notice her.
And then one day, life as Megan knew it had changed forever. Megan was
in an accident that disfigured her face and plastic surgeons had to
restructure it very carefully. Only no one would have thought that when
the bandages came off, Megan would be even more beautiful than Lucy . . .

From the Trade Paperback edition.