The Summer I Turned Pretty Season 3 Cast: Full List Of Returning Stars & Shocking New Characters

The highly anticipated third season of The Summer I Turned Pretty is set to bring Belly's love triangle to its dramatic conclusion, and as of this current date in December 2025, the full cast list is confirmed and packed with both familiar faces and intriguing new additions. This Amazon Prime Video hit, based on the final book in Jenny Han's trilogy, We'll Always Have Summer, promises a season filled with college drama, heartbreak, and the ultimate choice between the Fisher brothers, Conrad and Jeremiah. The returning stars are ready to dive back into the complex emotional landscape of Cousins Beach, but it's the new characters—including a few from the third novel—who are poised to shake up Belly's world in the most unexpected ways.

The core cast, led by Lola Tung, Christopher Briney, and Gavin Casalegno, is back, ready to tackle the emotional fallout from the end of Season 2. However, fans should prepare for a significant expansion of the world beyond the beach house, particularly as the story shifts focus to the characters' college lives and new relationships. Get ready for an in-depth look at every confirmed actor and the fresh faces joining the ensemble for the final chapter of this beloved teen drama.

The Core Trio and Returning Cousins Beach Family: Updated Profiles

The heart of The Summer I Turned Pretty lies with the Conklin and Fisher families. While the characters face a new reality following the events of Season 2, the main cast remains central to the narrative, bringing their signature chemistry and emotional depth to the screen.

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• Lola Tung as Isabel "Belly" Conklin
  • Born: October 28, 2002
  • Age (as of late 2025): 23
  • Role: The series protagonist, caught in a deeply emotional love triangle with Conrad and Jeremiah. Season 3 will see her grappling with her final romantic choice and the pressures of college life.
  • Fresh Detail: The Summer I Turned Pretty was her breakout role, launching her career directly after studying at LaGuardia High School and briefly attending Carnegie Mellon University.
• Christopher Briney as Conrad Fisher
  • Born: March 24, 1998
  • Age (as of late 2025): 27
  • Role: The brooding, emotionally guarded elder Fisher brother, whose relationship with Belly is complicated by their shared history and his personal struggles.
  • Fresh Detail: Briney is a graduate of Pace University's BFA program in Acting for Film, TV, Voiceover, and Commercials, a background that lends serious dramatic weight to the role of Conrad.
• Gavin Casalegno as Jeremiah Fisher
  • Born: September 2, 1999
  • Age (as of late 2025): 26
  • Role: The charming, golden-retriever younger Fisher brother, who begins Season 3 in a relationship with Belly, a key plot point adapted from the third novel.
  • Fresh Detail: Casalegno is one of the few main cast members with a significant personal life update, having reportedly married his partner, Cheyanne King, in 2024.
• Jackie Chung as Laurel Park
  • Role: Belly’s mother and Susannah’s best friend, a novelist dealing with her own grief and the challenges of raising teenagers.
• Sean Kaufman as Steven Conklin
  • Role: Belly’s older brother, whose relationship with Taylor will likely continue to be a major subplot.
• Rain Spencer as Taylor Jewel
  • Role: Belly's best friend and Steven's on-again, off-again love interest, known for her sharp wit and loyalty.
• David Iacono as Cam Cameron
  • Role: Belly’s sweet, former boyfriend who remains a supportive friend to the group.
• Rachel Blanchard as Susannah Fisher
  • Role: Conrad and Jeremiah's mother, whose character tragically passed away from cancer in Season 2. While her main story is over, Blanchard is expected to appear in flashback sequences, continuing to influence the brothers and Laurel.

New Faces: The Season 3 Cast Members Shaking Up the Narrative

Season 3, which is largely based on the book We'll Always Have Summer, introduces several new characters who will play pivotal roles in the college setting and in disrupting the established relationships. These additions bring new dynamics and potential drama, particularly for Jeremiah and Belly as they navigate their relationship.

The expansion of the cast beyond Cousins Beach is a clear indicator that the show is embracing the third novel’s focus on the characters' lives at college, bringing in new romantic rivals, friends, and antagonists.

• Lily Donoghue as Lacie Barone: Donoghue, known for Dirty John, steps into the role of Lacie. She is a sorority girl who is established as a past hookup of Jeremiah’s from spring break. Her presence at college is certain to cause tension and jealousy between Belly and Jeremiah.
• Sofia Bryant as Anika: Bryant, who gained recognition in Netflix’s I Am Not Okay With This, is confirmed to play a new character named Anika. Her role is currently undisclosed but is expected to be a significant addition to the college storyline.
• Zoé de Grand’Maison as Agnes: The actress from Riverdale and Orphan Black joins the cast as Agnes. Like Anika, her specific role is being kept under wraps, but she is listed alongside other characters who will interact with the main trio in their new environment.
• Tanner Zagarino as Redbird: Zagarino joins the cast as Redbird. This character name does not appear in the original books, suggesting a new creation for the series to further flesh out the college and party scenes.
• Isabella Briggs as Denise: Briggs is confirmed to play Denise, a new character whose interactions with the main cast are yet to be revealed but will contribute to the expanded world of Season 3.

Thematic Entities and Topical Authority: What Season 3 Will Explore

To fully understand the significance of the cast, it's essential to look at the thematic entities and plot points that Season 3, adapted from the book We'll Always Have Summer, will cover. The casting choices directly reflect these narrative shifts, moving away from pure summer escapism to more grounded, adult problems.

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The Love Triangle's Final Stand

The central conflict remains the Belly-Conrad-Jeremiah love triangle, a key topical entity. With Belly choosing Jeremiah at the end of Season 2, the third season will explore their relationship in the real world, away from the magic of Cousins Beach. The introduction of characters like Lacie Barone suggests that Jeremiah’s past will create obstacles for the couple, forcing Belly to confront her lingering feelings for Conrad, who is still a major part of her life.

College Life and New Beginnings

A major shift in the narrative is the focus on college. Belly, Conrad, and Jeremiah are all navigating higher education, which brings with it new social circles, new pressures, and new temptations. The addition of Anika, Agnes, and Redbird underscores this change, establishing a world outside of the familiar beach house. This setting allows the show to explore themes of growing up, long-distance relationships, and the reality of life after high school.

The Legacy of Susannah Fisher

Even in her absence, Susannah Fisher remains a powerful entity in the series. Her death is the catalyst for much of the drama in Season 2, and her memory will continue to influence the Fisher brothers and Laurel in Season 3. The use of Rachel Blanchard in flashbacks is crucial for maintaining this emotional weight, reminding the audience of the idyllic summers that started it all and the bond that ties the two families together.

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Ultimately, The Summer I Turned Pretty Season 3 is shaping up to be the most complex and emotionally charged season yet. The returning cast's established chemistry, combined with the fresh energy and conflict brought by the new actors, guarantees a finale that will satisfy fans of the original books and those who have fallen in love with the television adaptation.