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The final chapter of The Summer I Turned Pretty Season 3 premiered on Prime Video on July 16, 2025, and it brings both familiar faces and fresh additions to Cousins Beach. In this guide, we’ll walk you through the returning leads, spotlight the new cast members, and explain how the season will unfold week by week.
Whether you're a longtime fan or a newcomer, this guide will help you recognize every key character as the series draws to a close. Isabel “Belly” Conklin, now freshly graduated and navigating early adulthood, still finds her summers centered at Cousins Beach alongside the Fisher brothers.
Belly’s journey reaches its peak in The Summer I Turned Pretty Season 3, as she weighs her feelings for Conrad and her commitment to Jeremiah amid life changes. Meanwhile, Conrad Fisher returns in medical scrubs, bringing a more mature edge to his complicated friendship with Belly.
His presence upends Jeremiah’s quiet confidence, creating the tension at the heart of this final season. Jeremiah Fisher, fully aware of his feelings, faces the hardest choice of his life when Conrad reappears. All three performances blend nostalgia with the insight of actors stepping into their characters’ next chapter.
Returning to Cousins Beach with familiar faces
The Summer I Turned Pretty Season 3 picks up after Belly’s junior year of college, so viewers see each character a little older and wiser. Belly (Lola Tung) carries the narrative forward, reflecting on her summers past and the emotional journey she’s grown into.
Conrad (Christopher Briney) shows up as a medical student, his quiet intensity deepening the love triangle that has defined the show so far. Jeremiah (Gavin Casalegno) stands by Belly, balancing his affection with the shock of Conrad’s return. Their triangular bond forms the emotional backbone of The Summer I Turned Pretty Season 3, anchoring every scene with heartfelt drama.
New characters joining the final summer
The Summer I Turned Pretty Season 3 brings several new faces to Cousins Beach, each adding fresh storylines and surprises.
- Denise (Isabella Briggs)
- Denise arrives with ties to both Steven and Jeremiah, hinting at unexpected romantic twists. Her character’s presence challenges loyalties and stirs up the usual summer calm.
- Lucinda Jewel (Kristen Connolly)
- As a series regular, Lucinda steps into the inner circle with a backstory that will connect deeply to Belly and her friends. Expect her to play a key role in the season’s most pivotal moments.
- Anika (Sofia Bryant)
- Anika joins local beach‑house gatherings, bringing a lively spark to group activities. Her energy shifts the dynamic of familiar hangouts and jolts old friendships.
- Lacie Barone (Lily Donoghue)
- Lacie’s easygoing nature masks hidden ambitions, making her both a comforting companion and a wildcard at Cousins Beach events. Watch for her quietly influencing major decisions.
- Agnes (Zoé de Grand’Maison)
- Agnes threads through family dinners and community outings, offering both warmth and candid advice. Her involvement highlights how the season balances youthful drama with adult perspectives.
- Emma Ishta and Tanner Zagarino
- These two newcomers weave in and out of key scenes from beach bonfires to quiet shore walks, rounding out the social circle and reminding viewers there’s always room for more memories.
Each of these actors steps into The Summer I Turned Pretty Season 3 ready to deepen the world fans have come to love. Just when you think you know every corner of Cousins Beach, these fresh faces ensure there’s more to discover.
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Supporting roles linking past and present
Beyond the central love triangle, a handful of familiar faces and new cameos ground The Summer I Turned Pretty Season 3 in its earliest roots. These supporting characters bring both nostalgia and fresh perspective, reminding us how friendships and family bonds evolve alongside Belly’s journey.
- Steven Conklin (Sean Kaufman): Belly’s older brother steps into young adulthood with his romantic interests and college milestones. His storylines mirror Belly’s growth, showing how siblings support each other even when their paths diverge.
- Laurel (Jackie Chung): As the attentive mother, Laurel balances comforting her children with maintaining lifelong friendships, especially the one with Susannah. Her scenes underscore themes of resilience and love across generations.
- Taylor (Rain Spencer): Belly’s best friend returns as the season’s unwavering confidante. Taylor’s easy humor and loyalty highlight the importance of childhood bonds, even as everyone changes.
- Cam Cameron (David Iacono) & Julia (Kyra Sedgwick): These series veterans appear in flashbacks and family gatherings, weaving earlier memories into the present narrative. Their moments on screen tie Season 3 back to Jenny Han’s original novels, closing the loop on long‑standing story threads.
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The Summer I Turned Pretty Season 3: Season schedule and what to expect
The Summer I Turned Pretty Season 3 consists of 11 episodes, with the first two available on July 16, 2025, and a new installment streaming every Wednesday at 3 a.m. ET. The finale lands on September 17, giving viewers more than two months to follow Belly’s final summer of adolescence.
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This weekly rollout allows time to savor twists, discuss character choices, and anticipate which storylines from the books will come to life. As Cousins Beach says goodbye, fans will witness the closing of a coming‑of‑age trilogy that began with the simple wish for one perfect summer.
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