Nicola Yoon is an American author known for her young adult novels. She gained widespread recognition with her debut book, Everything, Everything, which tells the story of a girl with a rare illness who falls in love with her neighbor. The novel was adapted into a film in 2017, further increasing her popularity. Yoon's second novel, The Sun Is Also a Star, explores themes of fate and love over the course of a single day in New York City. This book was also adapted into a movie in 2019. Yoon's writing often features diverse characters and addresses important social issues.