20 Years Later: Where Is The ‘13 Going On 30’ Cast Now? The Shocking Transformations And Reunion Details

The iconic 2004 romantic comedy, 13 Going on 30, celebrated its monumental 20th anniversary in April 2024, sparking a massive wave of nostalgia for fans who grew up wishing they could skip their awkward teenage years. The film, which follows Jenna Rink’s magical transformation from a 13-year-old on the cusp of disaster to a 30-year-old magazine editor, remains a beloved classic for its heart, humor, and timeless message about being true to yourself.

The milestone anniversary saw the core cast members—Jennifer Garner, Mark Ruffalo, and Judy Greer—reunite, giving fans a fresh look at the stars who brought the story of Jenna and Matty to life. From Oscar nominations and superhero franchises to executive producing roles, the actors have certainly been "30, flirty, and thriving" in their own careers. Here is the definitive, up-to-date look at the complete cast of 13 Going on 30 and where they are now in the wake of the film’s 20th birthday.

The Grown-Up Cast: From Poise to Present Day

The adult cast members were the heart of the film, navigating the chaos of Jenna's sudden time jump. Two decades later, these stars are at the peak of their careers, with recent projects that continue to solidify their status as Hollywood heavyweights.

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Jennifer Garner (Jenna Rink)

• Role in Film: The 30-year-old version of Jenna Rink, a successful but unfulfilled editor at Poise magazine.
• Recent Career Highlights: Following her iconic run on Alias and her role in 13 Going on 30, Garner has balanced family films with dramatic roles. Recently, she starred in the Apple TV+ limited series The Last Thing He Told Me and the Netflix comedy Family Switch. She also continues her work as a passionate advocate for early childhood education and co-founded the organic food company Once Upon a Farm.
• 20th Anniversary News: Garner participated heavily in the 2024 anniversary celebrations, sharing behind-the-scenes memories and reuniting with her co-stars. In a major update, she has signed on as an executive producer for the upcoming 13 Going on 30 musical adaptation, ensuring her continued involvement with the story.
• Personal Life: Garner was previously married to Ben Affleck, with whom she shares three children.

Mark Ruffalo (Matty Flamhaff)

• Role in Film: Matty Flamhaff, Jenna’s childhood best friend and secret admirer, who is now a professional photographer.
• Recent Career Highlights: Ruffalo has become a global superstar, most notably for his role as Bruce Banner/The Hulk in the Marvel Cinematic Universe, appearing in multiple Avengers films and the Disney+ series She-Hulk: Attorney at Law. He received an Oscar nomination for his role in Poor Things (2023).
• 20th Anniversary News: Ruffalo joined Garner and Greer for the 2024 reunion, reflecting on the film's enduring appeal. He has often spoken warmly about his experience filming the movie, particularly the famous "Thriller" dance scene.

Judy Greer (Lucy "Tom-Tom" Wyman)

• Role in Film: Lucy Wyman, Jenna’s frenemy and colleague at Poise, originally known as "Tom-Tom."
• Recent Career Highlights: Greer is one of Hollywood's most prolific character actors. Her recent work includes roles in the Halloween reboot trilogy and the Showtime series Kidding, where she co-starred with Jim Carrey. She is also a familiar face in the MCU, having played Maggie Lang in the Ant-Man films.
• 20th Anniversary News: Greer also participated in the 2024 reunion and even had a mini-reunion with Jennifer Garner in Paris prior to the main event, showcasing their lasting friendship.

The Six Chicks and Other Key Players: Where Are They Now?

The film’s younger cast, including the infamous "Six Chicks" clique, featured several actors who went on to become major stars in their own right. Their careers have diversified significantly since their time in the 2004 classic.

Christa B. Allen (Young Jenna Rink)

• Role in Film: The 13-year-old version of Jenna Rink, whose birthday wish sets the entire plot in motion.
• Recent Career Highlights: Allen is often recognized for her uncanny resemblance to Jennifer Garner. She starred as Charlotte Grayson in the popular television series Revenge from 2011 to 2015. She has also appeared in various made-for-TV movies and is a popular figure on social media, often creating content that pays homage to her iconic role.
• Topical Authority Entity: Fans frequently point out that Allen has the same birthday (April 23) as the movie's 20th-anniversary date, leading to a fun, recurring meme.

Sean Marquette (Young Matty Flamhaff)

• Role in Film: The 13-year-old version of Matty Flamhaff, the sweet, loyal best friend.
• Recent Career Highlights: Marquette has primarily focused on voice acting, lending his voice to characters in animated series like The Kids From Room 402 and the popular video game franchise Kingdom Hearts. He also had a main role as Johnny Atkins on the sitcom The Goldbergs and its spin-off, Schooled.

Brie Larson (One of the Six Chicks)

• Role in Film: One of the mean-spirited "Six Chicks," the popular girls who torment young Jenna.
• Recent Career Highlights: Larson's career trajectory is perhaps the most explosive of the minor cast members. She won the Academy Award for Best Actress for the 2015 film Room. She is now globally famous as Captain Marvel (Carol Danvers) in the Marvel Cinematic Universe, a role she has played in multiple blockbusters, including The Marvels (2023).
• Topical Authority Entity: Her small, uncredited role in 13 Going on 30 is a fun piece of trivia frequently highlighted by fans.

Ashley Benson (One of the Six Chicks)

• Role in Film: Another member of the "Six Chicks" clique.
• Recent Career Highlights: Benson achieved widespread fame for her main role as Hanna Marin in the hit teen drama series Pretty Little Liars, which ran from 2010 to 2017. She has also appeared in films such as Spring Breakers and Her Smell.

Forever 30, Flirty, and Thriving: The Legacy and Future

The enduring appeal of 13 Going on 30 lies in its universal themes of friendship, authenticity, and the desire to fast-forward life. The 20th anniversary in 2024 has reaffirmed the film's status as a cultural touchstone, especially for those who came of age in the early 2000s.

The Impact of the 20th Anniversary Reunion

The reunion of Jennifer Garner, Mark Ruffalo, and Judy Greer was a major media event, with the stars reflecting on the film’s impact. The cast shared stories about the production, including the famous "Thriller" dance sequence that Jenna and Matty perform at the party, which remains one of the most memorable scenes in rom-com history. The wave of social media content and articles celebrating the anniversary demonstrated that the movie’s message—that "thirty is the new thirteen"—still resonates deeply with audiences.

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The Musical Adaptation and Unseen Endings

One of the most exciting pieces of news to emerge from the recent buzz is the announcement of a musical adaptation of the film. Jennifer Garner's involvement as an executive producer suggests a high-quality production that aims to capture the magic of the original story for a new medium. This project speaks volumes about the lasting creative value of the original script and characters.

Furthermore, in honor of the anniversary, cast members revealed that the film almost had a completely different ending. This kind of behind-the-scenes trivia, shared two decades later, adds a layer of depth and curiosity for dedicated fans who thought they knew everything about the classic. The original ending was reportedly more ambiguous, but the final, heartwarming resolution is what cemented the film's legacy.

Why the Film Still Matters Today

The movie is a masterclass in the wish-fulfillment genre, but its true power lies in its exploration of maturity. Jenna's journey teaches us that the key to happiness isn't achieving success by a certain age, but rather cultivating kindness, loyalty, and true friendship—the very qualities she abandoned at age 13. The film’s focus on the importance of Matty's dollhouse and the power of the Razzles candy wish are iconic symbols of the innocence and sincerity that Jenna had to reclaim.

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From the iconic fashion moments (the striped dress and the colorful outfits at the Poise magazine party) to the feel-good soundtrack, 13 Going on 30 is more than just a movie; it’s a time capsule. As the cast continues to thrive in their respective careers, their shared history in this beloved film ensures that they will forever be linked to the idea of being "forever 30, flirty, and thriving." The 2024 anniversary proved that the magic of the film is still strong, and its place in pop culture is secure for decades to come.