Believe it or not, it's the 15th anniversary of 13 Going on 30 [1], which was released on April 23, 2004. If you watch it for the 200th time (as one should), you might notice something you hadn't before: Brie Larson is in it. She was one of the Six Chicks — yes, the mean girls [2] with the side ponies — led by Judy Greer, aka "Tom-Tom." [3] There's a chance you already knew that, but someone who didn't is Larson's current costar, Mark Ruffalo [4], who, of course, is 13 Going on 30's main star besides Jennifer Garner [5]. Because Larson had a smaller role, the two never worked together directly on the movie, and Ruffalo just learned about the connection while on the red carpet premiere of the pair's new movie [6], Avengers: Endgame [7].
Pretty crazy, huh? Before Larson was an Oscar-nominated actress with leading roles in Room and as Captain Marvel [8], she was in smaller movies including Sleepover and Hoot. Larson reflected on her time filming 13 Going on 30, telling Entertainment Tonight, "It was the moment when I realised I really wanted to direct." In honour of the movie's anniversary, Jennifer Garner also posted a really sweet tribute honouring the film and the cast. Ahead, jog your memory and see the moment Ruffalo realised he and Larson were in the same iconic rom-com.