The highly anticipated third and final season of "The Summer I Turned Pretty" is set to premiere on Amazon Prime Video on July 16, 2025. Based on the best-selling book trilogy by Jenny Han, the series has captivated audiences with its coming-of-age story centered around Isabel "Belly" Conklin and her complicated love triangle with the Fisher brothers, Conrad and Jeremiah.

Season 3 will consist of 11 episodes, making it the longest season yet. The storyline will pick up after Belly's junior year of college, where she is happily in a relationship with Jeremiah and looking forward to another summer in Cousins Beach with him. However, a life-altering event throws a wrench into her plans and brings Conrad back into her life, forcing her to confront her unresolved feelings and make a final decision about who she truly wants to be with.

The main cast is set to return for the final season, including Lola Tung as Belly, Christopher Briney as Conrad, Gavin Casalegno as Jeremiah, Sean Kaufman as Steven (Belly's brother), and Rain Spencer as Taylor (Belly's best friend). Jackie Chung will also return as Laurel, Belly's mother. New additions to the cast include Isabella Briggs and Kristen Connolly as series regulars, though their roles are currently unknown. Sofia Bryant, Lily Donoghue, Zoé de Grand'Maison, Emma Ishta, and Tanner Zagarino will also be joining the cast in recurring roles.

While the series has largely followed the plot of Han's books, the showrunner has teased that there will be some surprises in the final season, even for those familiar with the source material. Jenny Han has assured fans that any deviations from the books will be made to serve the story and provide a satisfying conclusion to the series.

The recently released trailer offers a glimpse into the drama and tension that awaits Belly in the final season. Set to Taylor Swift's "Daylight" and "Red," the trailer showcases Belly's relationship with Jeremiah and the re-emergence of Conrad, hinting at the difficult choice she will have to make. The use of these two songs, known for their contrasting themes of love, has sparked much speculation among fans about which brother Belly will ultimately choose.

"The Summer I Turned Pretty" has resonated with audiences of all ages due to its relatable characters, heartfelt storylines, and exploration of themes such as love, loss, friendship, and family. The final season promises to be an emotional and unforgettable conclusion to Belly's journey as she navigates the complexities of young adulthood and makes the ultimate decision about her future.