XO, Kitty

Choosing to read Jenny Han’s beloved To All the Boys trilogy offers a deeper dive into the nuanced relationships and emotional journeys of the Covey family. These heartfelt stories focus largely on Lara Jean, but Kitty’s wit and charm shine through, allowing readers to experience her growth from an observant, mischievous little sister to a meaningful catalyst in the family’s life. The novels explore themes not only of young love, but of family, cultural identity, and growing up, portrayed through superbly crafted characters and gentle, relatable prose. Jenny Han’s stories give readers the chance to savor the subtle moments and internal conflicts that series adaptations must often compress for screen time. For those who fall in love with Kitty in XO, Kitty, reading the original trilogy provides the rich context and emotional insight into the Covey sisters’ world, making every plot twist and heartfelt confession that much more rewarding. Choose the books for an authentic, lingering narrative experience.

XO, Kitty is a spin-off that shifts focus from Lara Jean, the primary protagonist of the novels, to her younger sister Kitty, who is only a secondary character in Jenny Han’s books. This major creative leap means the series invents a whole new chapter for Kitty, while the novels conclude her story much earlier. In the books, Kitty is portrayed primarily as a precocious, meddling younger sister whose match-making antics kickstart Lara Jean’s adventures. Her storyline in the novels remains intertwined with her sisters and revolves around family, with her own romantic journey left unexplored. The Netflix series, meanwhile, imagines Kitty as a teenager navigating her first love and unique school experiences in Korea, which are entirely absent from the books. Key secondary characters and locations are also invented or significantly altered for the adaptation. XO, Kitty introduces new friends, love interests, and cultural settings specific to South Korea and an international boarding school—none of which are present in the book trilogy. The books mostly center on the Covey family’s home life and American high school backdrop. While the essence of Kitty’s mischievous character carries over from page to screen, the adaptation’s storylines, romances, and personal growth for Kitty are original creations. Fans of the books will notice that the spirit remains, but the world, conflicts, and relationships are largely new, offering an imaginative but divergent continuation.