Jennifer Garner Is Thriving in Iconic 13 Going on 30 Halloween Costume

Jennifer Garner is 30, flirty and thriving once again.

Two decades after 13 Going on 30 hit theaters, the actress paid homage to the film when she brought back the signature multi-colored cocktail dress for Halloween.

In an Oct. 30 TikTok, Jennifer—who starred alongside Mark Ruffalo and Judy Greer in the movie—recreated the scene in the film where her character Jenna got ready for a party after becoming an adult to Whitney Houston's song "I Wanna Dance With Somebody." 

She captioned the montage, "Happy 20th Halloween, Jenna Rink."

However, with age comes with adjustments. So this time, the 52-year-old was also sure to apply a retinol cream, wear her glasses while putting on her makeup and accessorize the look with a more comfortable shoe choice—sneakers instead of strappy heels.

And while the dress was a blast from the past, it's not the original, according to the film's costume designer Susie DeSanto. 

"We were based in Los Angeles," she told People in April. "Her dress went into a warehouse, and I sadly think it's in a landfill somewhere. Who knows where it is?"

Because despite the piece becoming such a beloved look, she didn't expect it to transcend decades. In fact, she credits Jennifer with it being a fan favorite.

"The dress really wasn't premeditated," she continued. "Culture took the dress and went with it. The reason I think people fall in love with it is because of Jen. I think anybody else in that role, it would've just been a cute movie, but I think right then she was the exact right person with the right energy and ability to tap into her youthfulness."

But Jennifer—who is mom to her and ex-husband Ben Affleck's kids Violet, 18, Seraphina, 15, and Samuel, 12—emphasized that it was all Susie.

"She came into that first meeting with an entire arc for Jenna: color, theme, shape," the Elektra star gushed to Vogue in April. "She is telling her own story that I would compare to being the illustrator of a children's book: they have their own thing going on that's sorta counterpoint to what the words are saying."

Jennifer also admitted that she was shocked to see people dressed up in the Versace dress for Halloween.

"It's the next generation of people watching it who have really made me aware of its staying power," she explained. "There've been multiple times when I'm out trick-or-treating with my kids and see someone dressed up as Jenna in that mini dress. The kids who were 13 when it came out are now grown-ups showing it to their kids—I know that because they always reach out to me and say, 'I'm now 30, flirty, and thriving!'"

But Jennifer isn't the only star who showed out for Halloween. Keep reading to see all the celebs who dressed up this year.

The couple were off to see the Wizard as Dorothy and the Tin Man from Wizard of Oz.

Who's that girl? It's the New Girl actress dressed as The Real Housewives of Salt Lake City's Angie Katsanevas.

The Property Brothers star was looking dead cool in his Wolverine costume.  

Accio, Harry Potter! Or as the rapper (born Gerald Gillum) put it on Instagram, "Gerry Potter."

Four scores and seven years ago—or rather, in 2024—the Modern Family alum and his husband dressed as Abraham Lincoln and Mary Todd Lincoln.

The model proved her whole life is a dark room, dressing up as Lydia Deetz to celebrate her 37th birthday at Airbnb's Beetlejuice, Beetlejuice experience.

The Oscar winner was feeling witchy with her cat.

The Victoria's Secret Angel was the perfect Black Swan.

The couple stepped out as Christine and the Phantom of the Opera.

The Jersey Shore star dressed up as a patient who was "sick of these b--ches."

This influencer just pulled Lady Gaga's iconic meat dress out of the freezer.

The devil may wear Prada, but the Oscar winner dressed as a ghoulish version of the Statue of Liberty for Halloween.

The Love Island USA contestant was just Ken this Halloween, captioning his Instagram post, "I'm Kenough."

The Pretty Little Liars alum and her little lambs were too cute in their matching costumes.

The pair debuted an Alice in Wonderland couples costume.

The model and the "Lights" singer make their millennium at Airbnb's Beetlejuice experience in Hillsborough, N.J.

The singer partied at Pizzaslime's annual bash, which served Casamigos margaritas and Casamigos palomas garnished with candy eye balls.

A month after she brushed off fans' allegations of using Ozempic to slim down, the singer dressed up as the fictional weight loss drug Lizzo, as seen on South Park's The End of Obesity special.

The "Did It First" rapper channeled Milla Jovovich's Leeloo character from The Fifth Element.

The Game of Thrones alum channeled The Matrix, writing on Instagram, "Red or blue pill."

It was a simply spooky night for the Simple Life alum at Universal Studios Hollywood.

The Transformers: Age of Extinction actress transformed herself to a Playboy Bunny.

The "Make Me Feel" singer had a bloody good time at a Cinespia screening of The Texas Chain Saw Massacre in Los Angeles.

Baby, baby, baby, oh! The Bachelor Nation star channeled Justin Bieber for a Halloween party.

There were no cruel intentions as the Buffy the Vampire Slayer alum visited Knott's Scary Farm in Buena Park, Calif.

Wicked is going to be a pop-u-lar Halloween costume—just ask the Bachelor Nation star and the singer, who dressed up as Glinda and Elphaba from the beloved musical.

The Nickelodeon alum dressed as the title character in 2002's Coraline.

Leave it to Heidi Klum's daughter to celebrate Halloween early, dressing up as Pamela Anderson's Barb Wire character.

So this is what they do in the shadows! The Vanderpump Rules star and the Magicians actor faced their fears at Universal Studios Hollywood's Halloween Horror Nights.

The former Disney darling brought out the big guns to channel Laura Croft. 

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