Prime Video Reveals Key Plot Details and Cast of Final Season of ‘The Summer I Turned Pretty’

Prime Video has released the official trailer for the third and final season of ‘The Summer I Turned Pretty’, based on Jenny Han’s bestselling trilogy. The show continues to follow Isabel ‘Belly’ Conklin and her complicated love triangle with brothers Conrad and Jeremiah Fisher. Season 3, which premieres on July 16, 2025, will unfold over 11 episodes released weekly and feature a two-year time jump, with Belly now in her junior year of college.

While Belly is currently in a committed relationship with Jeremiah, tensions rise as old feelings for Conrad resurface. The trailer teases a surprising twist: Belly announces she and Conrad are getting married, shocking everyone including Conrad himself. Family tensions, unresolved emotions, and new life chapters dominate the narrative. According to showrunner Jenny Han, Season 3 aims to stay true to the original novel, ‘We’ll Always Have Summer’, while offering fresh perspectives.

Returning cast includes Lola Tung, Christopher Briney, and Gavin Casalegno, among others. New faces such as Isabella Briggs and Kristen Connolly will also join the story. Han has stated that the emotional journey of the characters remains central to the storytelling, maintaining suspense around Belly’s ultimate choice between the two brothers.