Spoilers for The Summer I Turned Pretty season 3 finale ahead. Summer 2025 has been The Summer We All Crashed Out Over Tiny Engagement Rings and French Bobs. Even if you didn't watch The Summer I Turned Pretty unfurl over 10 dramatic weeks, you likely followed along through cultural osmosis, wondering what would happen once Taylor Swift's favorite series came to an end. Luckily for fans, we don't have to answer that question yet.
On September 17, just hours after the season 3 finale landed on Prime Video, the streamer announced that episode 12 exists...sort of. The Summer I Turned Pretty will return for a special finale, comprised of a feature-length movie. Showrunner/author of the original book series Jenny Han is set to direct and co-write the film with co-showrunner Sarah Kucserka, which "will wrap up Belly’s (Lola Tung) story," per The Hollywood Reporter.
"There is another big milestone left in Belly’s journey, and I thought only a movie could give it its proper due," Han said in a statement. "I’m so grateful to Prime Video for continuing to support my vision for this story and for making it possible to share this final chapter with the fans."
Belly (Lola Tung) in Paris in The Summer I Turned Pretty season 3, episode 9.
Diehard fans of the books know what remaining milestone the movie will likely cover, but Han's final adaptation may have some surprises for us yet. Below, we've gathered everything we know about The Summer I Turned Pretty finale movie so far. (If you need a breakdown of TSITP's season 3 finale, we've got you covered.)
When will 'The Summer I Turned Pretty' finale movie come out?
Prime Video has not announced a premiere date for the Summer I Turned Pretty movie. Speaking to TODAY the day after the season 3 finale, Han confirmed that it's "still a little too soon to say" when the film will arrive. "But Sarah Kucserka, my co-showrunner, and I have finished a draft, so we're chugging along."
As for a timeline, Han explained that it will take some time to complete the script and wrangle the busy cast. "We don't know when it's coming out, but not next year. Still have to make it," she said.
According to IMDb, Tung's next projects include a few buzzy horror movies: Forbidden Fruits (opposite Lili Reinhart and Victoria Pedretti) and The Young People, from Longlegs filmmaker Osgood Perkins. It seems production has wrapped on Forbidden Fruits, but The Young People is still in pre-production. Briney's schedule appears to be free, however. So, with a draft of the screenplay done and Tung's schedule likely clearing up sometime in 2026, it seems the movie could begin production sometime next year. It's hard to say, but it seems feasible that the film (which would be relatively low-lift to shoot and in post-production) could arrive in early 2027. Here's to hoping fans won't have to wait a full two years to return to Cousins, as they did between seasons 2 and 3. (And, hey, sounds like the release could make for great Valentine's Day plans!)
TSITP stars Lola Tung and Christopher Briney announce the finale movie at an event in Paris.
What will 'The Summer I Turned Pretty' finale movie be about?
The Summer I Turned Pretty's season 3 finale ended where the series started, with Belly choosing Conrad (Christopher Briney). It took a first ill-fated attempt at a relationship, a college romance with his little brother Jeremiah (Gavin Casalegno), a broken engagement, and a soul-searching study-abroad in Paris, but Belly finally built a life outside of the Fisher family's orbit before deciding to share that life with her first love. Season 3, episode 11, titled "At Last," concludes with a brief scene of Belly and Conrad returning to the beach house, as the voiceover says, "And just as it always had, the beach house held a million promises of summer. And what just might be."
However, the book season 3 is based on, We'll Always Have Summer, ends with a flash-forward to a second Cousins Beach wedding and a more definitive happy-ever-after. As Han's mention of a "final milestone" alluded to, the chances are that the movie will chronicle Belly and Conrad's courtship and eventual "I dos," while also wrapping up some of the show's lingering storylines involving Jeremiah, Steven (Sean Kaufman), Laurel (Jackie Chung), and Denise (Isabella Briggs). (Though, wouldn't it be hilarious if the big event was Belly's college graduation?)
Conrad and Belly in Paris together, after he travels abroad to try to win her back.
Who in the cast will return for 'The Summer I Turned Pretty' finale movie?
In many ways, Belly chose herself, but romantically, she also chose Conrad. So, of course, our faves Lola Tung and Christopher Briney, will return their roles as OTP Isabel "Belly" Conklin and Conrad Fisher. When news of the movie broke, the two stars both shared a photo of themselves posing in front of a sign that says "The Summer I Turned Pretty The Movie" at the finale premiere event.
Jeremiah himself, Gavin Casalegno, notably did not share the photo, but it seems likely that he'll make an appearance in the movie. While nothing is officially confirmed, the same can likely be said for the rest of the cast, including Steven (Sean Kaufman), Taylor (Rain Spencer), Laurel (Jackie Chung), and Denise (Isabella Briggs), among others. We'll have to wait for an official casting announcement to be sure, though!
Who is working behind-the-scenes on 'The Summer I Turned Pretty' finale movie?
As we noted, Han is returning to write/direct the upcoming movie. She's also working on the screenplay along with Sarah Kucserka, who was a co-showrunner/writer on the original series. We have our trust in them for a swoon-worthy final chapter!
You can buy The Summer I Turned Pretty book series on Bookshop.org.