Prime Video's hit show, The Summer I Turned Pretty, will be heading to the Big Screen following its season 3 (and series) finale. Conrad (Christopher Briney) and Belly (Lola Tung) in THE SUMMER I TURNED PRETTY Photo: Erika Doss © AMAZON CONTENT SERVICES LLCHere's what to know about The Summer I Turned Pretty movieAmazon broke the news that a movie has been greenlit on September 17- the day of the finale, during The Summer I Turned Pretty event in Paris. The Summer I Turned Pretty was an unexpected success. "There is another big milestone left in Belly’s journey, and I thought only a movie could give it its proper due. "It’s still a little too soon to say [when The Summer I Turned Pretty movie will come out], but it won't be next year."