The Summer I Turned Pretty has officially returned for season 3 on Prime Video, reuniting us with our favorite TV drama cast as we (hopefully) finally get answer to one of the Internet's favorite love triangles. Yes, it's time, will Belly end up with Jeremiah or Conrad?

And as well as being reunited with the likes of Lola Tung, Christopher Briney and Gavin Casalegno, the new season also introduces to a bunch of new characters who already play a pretty big role in the events of the new season.

In just the first episode alone (which dropped yesterday btw) we met five new characters including Conrad's new bestie Agnes, and Lacie, the woman Jeremiah cheated on Belly with.

If you want to know everything there possibly is to know about The Summer I Turned Pretty cast then here's your full rundown, including what to know about the new additions.

The main Summer I Turned Pretty cast

Lola Tung as Belly Conklin

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Amazon Prime

The series lead is Isabel 'Belly' Conklin who is played by Lola Tung, 22. As we head into season 3 Belly is finishing her third year of college, and dating Jeremiah. However, when an opportunity to travel abroad comes up and a secret confession from Jeremiah occurs, is everything about to change for Belly?

Lola, who is Cosmopolitan UK's August/September cover star opened up about playing a new phase in Belly's life explaining: "It did feel like there was a shift. Four years ago was when I got cast in the show and since I started, so much has happened [to me, personally]. So it was really cool to get to explore that. To see the growth and the maturity and get to play that."

As well as being Belly in TSITP Lola is also known for performing on Broadway in Hades Town and will star in the upcoming horror movie Forbidden Fruits.

Christopher Briney as Conrad Fisher

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ERIKA DOSS//Amazon Prime

Conrad Fisher is the eldest of two brothers Belly has grown up going to the summer house of. He's played by Christopher Briney, 27, who has also starred in the 2024 Mean Girls movie.

As we go into season three, Conrad is thriving at medical school in Stanford and just gets offered a new research job. He's also still very much navigating his feelings for Belly.

Gavin Casalegno as Jeremiah Fisher

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ERIKA DOSS//Amazon Prime

Jeremiah is the younger Fisher brother who Belly has grown up with and who she is now in a four year relationship with as the new season kicks off. But with his own struggles this season, what does the future hold for their relationship?

He's played by Gavin Casalegno, 25, who has also been in the movie Queen of The Ring.

Sean Kaufman as Steven Conklin

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ERIKA DOSS//Amazon Prime

Steven is Belly's older brother and as season 3 kicks off he's graduated early from Princeton and is now doing an internship working for Conrad and Jeremiah's dad. He also has an on again/off again relationship with Belly's best friend Taylor.

Steven is played by Sean Kaufman, 25, who has also had roles in Netflix's Manifest and FBI: Most Wanted.

Rain Spencer as Taylor Jewel

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ERIKA DOSS//Amazon Prime

Rain Spencer, 25, plays Belly's best friend Taylor who she is currently in college with. Taylor is thriving in her sorority and has a boyfriend, but is also sleeping with Steven on the side.

Rain did a few short films when she was younger and has also appeared in the movie Good Girl Jane.

Jackie Chung as Laurel Park

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ERIKA DOSS//Amazon Prime

Laurel is a writer and Belly and Steven's mom. Her best friend was Susannah, the mother of Conrad and Jeremiah. Since Susannah's death in the series, Laurel has taken on more of a motherly role for the two boys.

Jackie Chung plays the role of Laurel and over the years she's had roles in Grey's Anatomy and Station 19.

The new The Summer I Turned Pretty season 3 cast

Zoé de Grand'Maison as Agnes

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Dia Dipasupil//Getty Images

Agnes is a new character for season 3 and is one of Conrad's close friends who also got the research program with him, she also crucially gets him to reveal his feelings of love for Belly during the first episode.

She's played by Zoé de Grand'Maison, 30, who is best known for her roles in Riverdale as Evelyn Evernever and in Orphan Black as Gracie.

Isabella Briggs as Denise

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Denise is Steven's boss at his internship and she's played by Isabella Briggs. Briggs, 25, previously appeared in the 2023 series Fatal Attraction and an episode of Sugar and Evil.

Sofia Bryant as Anika

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Michael Loccisano//Getty Images

Anika is one of Belly and Taylor's new friends in college and appears to be a core part of their group.

Sofia Bryant, 25, is best known for her roles in I Am Not Okay With This and The Girl In The Woods, amongst other roles.

Lily Donoghue as Lacie Barone

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Lacie is one of Taylor's sorority friends, however she has a much bigger role to play when it's revealed she slept with Jeremiah while they were in Cabo together for Spring Break.

She's played by Lily Donoghue, 27, who previously appeared in two episodes of Prime Video's Daisy Jones & The Six. She's also had roles in Dirty John and Jane The Virgin.

Tanner Zagarino as Redbird

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Redbird is one of Jeremiah's frat bros, who Belly is less than keen on. He's played by Tanner Zagarino, 26, who is best known for previously appearing in Apple TV+'s Shrinking.

The Summer I Turned Pretty season 3 is available on Prime Video now.