Mark Ruffalo Celebrates the 16th Anniversary of 13 Going on 30 : 'Missing That Time'

Mark Ruffalo is looking back on happy memories.

In honor of the 16th anniversary of 13 Going on 30, the 52-year-old actor, who starred in the film alongside Jennifer Garner, reflected on how simpler things were back in 2004 — and 1987.

“Happy Anniversary to 13 Going on 30 today!” he wrote alongside a photograph of him and his costar cuddling up together in the beloved romantic comedy, about to share their favorite candy, Razzles.

“Remember what the world was like when Razzles were all the rage?" Missing that time,” he added in the nostalgic post alongside a candy emoji.

RELATED: Mark Ruffalo Has Fond Memories of Working with 'Lovely' Jennifer Garner in 13 Going on 30

Although Garner, 48, has yet to post a tribute of her own this year, she did celebrate the film’s anniversary last year.

“Fifteen years ago today #13GoingOn30 made her debut,” she wrote on social media, alongside a clip of her character, Jenna Rink, helping several young girls appreciate just how special they are.

“The movie benefitted from the performances of so many young actresses. Open and twinkly-magical then— now, 15 years later, they are ruling the world,” she added. “I loved my day with this slumber party crew: they danced with abandon and reminded me of the power of just saying yes—to being in a group, to vulnerability, to wearing a bra over your clothes.

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Fifteen years ago today #13GoingOn30 made her debut, directed with ❤️ by our beloved Gary Winick 😇 and a clutch of loving, hardcore producers (3 brilliant women—before it was cool to be led by women!) . The movie benefitted from the performances of so many young actresses. Open and twinkly-magical then— now, 15 years later, they are ruling the world. (Hi #SixChicks—@brielarson, @ashleybenson, @christabrittany—who also played a young me in Ghosts of Girlfriends Past—and my own sweet @revjuliaroth). . I loved my day with this slumber party crew: they danced with abandon and reminded me of the power of just saying yes—to being in a group, to vulnerability, to wearing a bra over your clothes. At the last minute I tossed my adopted LA family member Maddy Sprung-Keyser into the scene. @maddsk went on to be an Academic All American swimmer at Amherst, got her law degree from NYU, and is producing podcasts for @pineapple.fm. Looking back into her adolescence—with the hair and the men not wanting to jump her bones—is extra special today. Imagine if every 13 year old girl had an opportunity to dance and feel beautiful like the girls in this film. I am proud of all of you. ❤️ . I feel so, so lucky to have had the experience of making this joyful movie. And even luckier to be part of something that, all of these years later, can still make people (hi, @arianagrande 🤗) smile. 😁

A post shared by Jennifer Garner (@jennifer.garner) on Apr 23, 2019 at 11:43am PDT

Garner went on to give a shout-out to Ariana Grande, who included a reference to the 2004 movie in her “thank u, next” music video.

“I feel so, so lucky to have had the experience of making this joyful movie,” Garner wrote. “And even luckier to be part of something that, all of these years later, can still make people (hi, @arianagrande 🤗) smile. 😁.”

Columbia Tri Star/Kobal/REX/Shutterstock Jennifer Garner and Judy Greer

However, while Garner does have fond memories of the film, that doesn’t mean she’s on board for any sequels.

“What, like 15 going on 50?” she said last year, shooting down rumors on Good Morning America that a follow-up movie could be in the works.

“Let’s simmer down,” she added. “Leave well enough alone.”