Mark Ruffalo Had No Idea Brie Larson Was in 13 Going on 30 — Watch His Hilarious Reaction

Mark Ruffalo Admits He Had No Idea Brie Larson Was in '13 Going on 30' Mark Ruffalo had no idea he and Brie Larson had previously been in a movie together.

Mark Ruffalo Doesn't Recall Brie Larson Being in '13 Going on 30

Mark Ruffalo Found Out That He and Brie Larson Were Both in '13 Going on 30

Mark Ruffalo Finding Out That Brie Larson Was In 13 Going On 30 Is Absolutely Amazing

Mark Ruffalo Didn't Know Brie Larson Was In '13 Going On 30

13 Going on 30 Star Mark Ruffalo Didn't Know Brie Larson Was Also in It

Mark Ruffalo Didn't Know Brie Larson Was In '13 Going On 30

Mark Ruffalo Had No Idea Brie Larson Was in 13 Going on 30

Mark Ruffalo Finding Out That Brie Larson Was In 13 Going On 30 Is Absolutely Amazing