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"13 Going on 30" hit theaters on April 23, 2004, and starred Jennifer Garner as the grown-up version of Jenna Rink, a 13-year-old-girl whose dream of being "30, flirty, and thriving" came true with the help of some magic dust.
The movie, which has since become a fan-favorite and inspired Ariana Grande's "Thank U, Next" music video, also starred Mark Ruffalo as Jenna's childhood best friend named Matt. In the 15 years since "13 Going on 30" came out, Garner and Ruffalo have become A-listers.
Here's what the cast of "13 Going on 30" has been up to since the movie came out.